1005015155 has 32 divisors (see below), whose sum is σ = 1269354240. Its totient is φ = 762894720.

The previous prime is 1005015103. The next prime is 1005015223. The reversal of 1005015155 is 5515105001.

It is a happy number.

It is not a de Polignac number, because 1005015155 - 2¹⁶ = 1004949619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1005015155.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3273512 + ... + 3273818.

It is an arithmetic number, because the mean of its divisors is an integer number (39667320).

Almost surely, 2^1005015155 is an apocalyptic number.

1005015155 is a deficient number, since it is larger than the sum of its proper divisors (264339085).

1005015155 is a wasteful number, since it uses less digits than its factorization.

1005015155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659.

The product of its (nonzero) digits is 625, while the sum is 23.

The square root of 1005015155 is about 31701.9739921665. The cubic root of 1005015155 is about 1001.6689314516.

The spelling of 1005015155 in words is "one billion, five million, fifteen thousand, one hundred fifty-five".