1012165401 has 24 divisors (see below), whose sum is σ = 1489774720. Its totient is φ = 607639680.

The previous prime is 1012165387. The next prime is 1012165403. The reversal of 1012165401 is 1045612101.

1012165401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1012165401 - 2¹⁷ = 1012034329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1012165403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 57840 + ... + 73278.

Almost surely, 2^1012165401 is an apocalyptic number.

It is an amenable number.

1012165401 is a deficient number, since it is larger than the sum of its proper divisors (477609319).

1012165401 is a wasteful number, since it uses less digits than its factorization.

1012165401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15537 (or 15496 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1012165401 is about 31814.5470029042. The cubic root of 1012165401 is about 1004.0387998026.

Adding to 1012165401 its reverse (1045612101), we get a palindrome (2057777502).

The spelling of 1012165401 in words is "one billion, twelve million, one hundred sixty-five thousand, four hundred one".