1381035500 has 48 divisors (see below), whose sum is σ = 3248210784. Its totient is φ = 509918400.

The previous prime is 1381035497. The next prime is 1381035527. The reversal of 1381035500 is 55301831.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 1381035500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99734 + ... + 112733.

It is an arithmetic number, because the mean of its divisors is an integer number (67671058).

Almost surely, 2^1381035500 is an apocalyptic number.

1381035500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1381035500 is an abundant number, since it is smaller than the sum of its proper divisors (1867175284).

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

1381035500 is a wasteful number, since it uses less digits than its factorization.

1381035500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212499 (or 212487 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1381035500 is about 37162.2859899657. The cubic root of 1381035500 is about 1113.6146804305.

The spelling of 1381035500 in words is "one billion, three hundred eighty-one million, thirty-five thousand, five hundred".