2013120945 has 40 divisors (see below), whose sum is σ = 3936778560. Its totient is φ = 976056480.

The previous prime is 2013120929. The next prime is 2013120961. The reversal of 2013120945 is 5490213102.

It is an interprime number because it is at equal distance from previous prime (2013120929) and next prime (2013120961).

It is not a de Polignac number, because 2013120945 - 2⁴ = 2013120929 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 221485 + ... + 230394.

It is an arithmetic number, because the mean of its divisors is an integer number (98419464).

Almost surely, 2^2013120945 is an apocalyptic number.

It is an amenable number.

2013120945 is a deficient number, since it is larger than the sum of its proper divisors (1923657615).

2013120945 is a wasteful number, since it uses less digits than its factorization.

2013120945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451907 (or 451898 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2013120945 is about 44867.8163609508. The cubic root of 2013120945 is about 1262.6702723650.

The spelling of 2013120945 in words is "two billion, thirteen million, one hundred twenty thousand, nine hundred forty-five".