1376538520 has 64 divisors (see below), whose sum is σ = 3542978880. Its totient is φ = 471515136.

The previous prime is 1376538511. The next prime is 1376538529. The reversal of 1376538520 is 258356731.

It is an interprime number because it is at equal distance from previous prime (1376538511) and next prime (1376538529).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1376538529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473712 + ... + 476608.

It is an arithmetic number, because the mean of its divisors is an integer number (55359045).

Almost surely, 2^1376538520 is an apocalyptic number.

1376538520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1376538520 is an abundant number, since it is smaller than the sum of its proper divisors (2166440360).

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

1376538520 is a wasteful number, since it uses less digits than its factorization.

1376538520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4612 (or 4608 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 1376538520 is about 37101.7320350412. The cubic root of 1376538520 is about 1112.4046346735.

The spelling of 1376538520 in words is "one billion, three hundred seventy-six million, five hundred thirty-eight thousand, five hundred twenty".