1015442155 has 32 divisors (see below), whose sum is σ = 1503903744. Its totient is φ = 640953216.

The previous prime is 1015442143. The next prime is 1015442161. The reversal of 1015442155 is 5512445101.

It is a cyclic number.

It is not a de Polignac number, because 1015442155 - 2⁵ = 1015442123 is a prime.

It is a super-2 number, since 2×1015442155² = 2062245540302088050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 171352 + ... + 177178.

It is an arithmetic number, because the mean of its divisors is an integer number (46996992).

Almost surely, 2^1015442155 is an apocalyptic number.

1015442155 is a deficient number, since it is larger than the sum of its proper divisors (488461589).

1015442155 is a wasteful number, since it uses less digits than its factorization.

1015442155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6235.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1015442155 is about 31866.0031224501. The cubic root of 1015442155 is about 1005.1211144186.

Adding to 1015442155 its reverse (5512445101), we get a palindrome (6527887256).

The spelling of 1015442155 in words is "one billion, fifteen million, four hundred forty-two thousand, one hundred fifty-five".