1556155148 has 24 divisors (see below), whose sum is σ = 2783165952. Its totient is φ = 760988304.

The previous prime is 1556155141. The next prime is 1556155171. The reversal of 1556155148 is 8415516551.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1556155141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468911 + ... + 472217.

It is an arithmetic number, because the mean of its divisors is an integer number (115965248).

Almost surely, 2^1556155148 is an apocalyptic number.

It is an amenable number.

1556155148 is a deficient number, since it is larger than the sum of its proper divisors (1227010804).

1556155148 is a wasteful number, since it uses less digits than its factorization.

1556155148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5861 (or 5859 counting only the distinct ones).

The product of its digits is 120000, while the sum is 41.

The square root of 1556155148 is about 39448.1323765777. The cubic root of 1556155148 is about 1158.8244005515.

The spelling of 1556155148 in words is "one billion, five hundred fifty-six million, one hundred fifty-five thousand, one hundred forty-eight".