1374649380 has 180 divisors, whose sum is σ = 4670490132. Its totient is φ = 338307840.

The previous prime is 1374649361. The next prime is 1374649391. The reversal of 1374649380 is 839464731.

1374649380 is a `hidden beast` number, since 13 + 74 + 6 + 493 + 80 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 68260644 + 1306388736 = 8262^2 + 36144^2 .

It is a tau number, because it is divible by the number of its divisors (180).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 271270 + ... + 276290.

Almost surely, 2^1374649380 is an apocalyptic number.

1374649380 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 1374649380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2335245066).

1374649380 is an abundant number, since it is smaller than the sum of its proper divisors (3295840752).

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

1374649380 is a wasteful number, since it uses less digits than its factorization.

1374649380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5068 (or 5044 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 1374649380 is about 37076.2643749340. The cubic root of 1374649380 is about 1111.8955194436.

The spelling of 1374649380 in words is "one billion, three hundred seventy-four million, six hundred forty-nine thousand, three hundred eighty".