1376631620 has 96 divisors (see below), whose sum is σ = 3654405888. Its totient is φ = 423885312.

The previous prime is 1376631589. The next prime is 1376631629. The reversal of 1376631620 is 261366731.

It is a super-2 number, since 2×1376631620² = 3790229234367648800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (1376631629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57119 + ... + 77561.

It is an arithmetic number, because the mean of its divisors is an integer number (38066728).

Almost surely, 2^1376631620 is an apocalyptic number.

1376631620 is a gapful number since it is divisible by the number (10) 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 1376631620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1827202944).

1376631620 is an abundant number, since it is smaller than the sum of its proper divisors (2277774268).

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

1376631620 is a wasteful number, since it uses less digits than its factorization.

1376631620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20509 (or 20507 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 1376631620 is about 37102.9866722344. The cubic root of 1376631620 is about 1112.4297126826.

The spelling of 1376631620 in words is "one billion, three hundred seventy-six million, six hundred thirty-one thousand, six hundred twenty".