1376979552 has 216 divisors, whose sum is σ = 4466334600. Its totient is φ = 401117184.

The previous prime is 1376979551. The next prime is 1376979553. The reversal of 1376979552 is 2559796731.

1376979552 is a `hidden beast` number, since 13 + 7 + 6 + 9 + 79 + 552 = 666.

It is an interprime number because it is at equal distance from previous prime (1376979551) and next prime (1376979553).

It is a super-2 number, since 2×1376979552² = 3792145373252241408, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1376979551) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 924024 + ... + 925512.

It is an arithmetic number, because the mean of its divisors is an integer number (20677475).

Almost surely, 2^1376979552 is an apocalyptic number.

1376979552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1376979552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2233167300).

1376979552 is an abundant number, since it is smaller than the sum of its proper divisors (3089355048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1376979552 is a wasteful number, since it uses less digits than its factorization.

1376979552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1550 (or 1526 counting only the distinct ones).

The product of its digits is 3572100, while the sum is 54.

The square root of 1376979552 is about 37107.6751090660. The cubic root of 1376979552 is about 1112.5234238556.

The spelling of 1376979552 in words is "one billion, three hundred seventy-six million, nine hundred seventy-nine thousand, five hundred fifty-two".