1557200963 has 4 divisors (see below), whose sum is σ = 1557295128. Its totient is φ = 1557106800.

The previous prime is 1557200933. The next prime is 1557200989. The reversal of 1557200963 is 3690027551.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1557200963 - 2⁸ = 1557200707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1557200903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14981 + ... + 57782.

It is an arithmetic number, because the mean of its divisors is an integer number (389323782).

Almost surely, 2^1557200963 is an apocalyptic number.

1557200963 is a deficient number, since it is larger than the sum of its proper divisors (94165).

1557200963 is an equidigital number, since it uses as much as digits as its factorization.

1557200963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94164.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 1557200963 is about 39461.3857207270. The cubic root of 1557200963 is about 1159.0839386302.

The spelling of 1557200963 in words is "one billion, five hundred fifty-seven million, two hundred thousand, nine hundred sixty-three".