1403557164 has 18 divisors (see below), whose sum is σ = 3547880700. Its totient is φ = 467852376.

The previous prime is 1403557159. The next prime is 1403557201. The reversal of 1403557164 is 4617553041.

1403557164 is a `hidden beast` number, since 1 + 40 + 3 + 557 + 1 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 38987699 = 1403557164 / (1 + 4 + 0 + 3 + 5 + 5 + 7 + 1 + 6 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19493814 + ... + 19493885.

Almost surely, 2^1403557164 is an apocalyptic number.

It is an amenable number.

1403557164 is an abundant number, since it is smaller than the sum of its proper divisors (2144323536).

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

1403557164 is a wasteful number, since it uses less digits than its factorization.

1403557164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38987709 (or 38987704 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 1403557164 is about 37464.0783151007. The cubic root of 1403557164 is about 1119.6356074354.

The spelling of 1403557164 in words is "one billion, four hundred three million, five hundred fifty-seven thousand, one hundred sixty-four".