1557043484 has 12 divisors (see below), whose sum is σ = 2727197424. Its totient is φ = 777844224.

The previous prime is 1557043463. The next prime is 1557043513. The reversal of 1557043484 is 4843407551.

It is a super-2 number, since 2×1557043484² = 4848768822133716512, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164192 + ... + 173415.

It is an arithmetic number, because the mean of its divisors is an integer number (227266452).

Almost surely, 2^1557043484 is an apocalyptic number.

It is an amenable number.

1557043484 is a deficient number, since it is larger than the sum of its proper divisors (1170153940).

1557043484 is a wasteful number, since it uses less digits than its factorization.

1557043484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338764 (or 338762 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 41.

The square root of 1557043484 is about 39459.3903146007. The cubic root of 1557043484 is about 1159.0448647754.

The spelling of 1557043484 in words is "one billion, five hundred fifty-seven million, forty-three thousand, four hundred eighty-four".