1375861004 has 36 divisors (see below), whose sum is σ = 2840337360. Its totient is φ = 581343840.

The previous prime is 1375861001. The next prime is 1375861027. The reversal of 1375861004 is 4001685731.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375861001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35519 + ... + 63350.

It is an arithmetic number, because the mean of its divisors is an integer number (78898260).

Almost surely, 2^1375861004 is an apocalyptic number.

1375861004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1375861004 is an abundant number, since it is smaller than the sum of its proper divisors (1464476356).

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

1375861004 is a wasteful number, since it uses less digits than its factorization.

1375861004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98958 (or 98949 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 1375861004 is about 37092.6003941487. The cubic root of 1375861004 is about 1112.2221005826. Note that the first 3 decimals are identical.

The spelling of 1375861004 in words is "one billion, three hundred seventy-five million, eight hundred sixty-one thousand, four".