4611981915 has 64 divisors (see below), whose sum is σ = 8388748800. Its totient is φ = 2403338112.

The previous prime is 4611981893. The next prime is 4611981943. The reversal of 4611981915 is 5191891164.

4611981915 is a `hidden beast` number, since 4 + 611 + 9 + 8 + 19 + 15 = 666.

It is not a de Polignac number, because 4611981915 - 2⁶ = 4611981851 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1376272 + ... + 1379618.

It is an arithmetic number, because the mean of its divisors is an integer number (131074200).

Almost surely, 2^4611981915 is an apocalyptic number.

4611981915 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

4611981915 is a deficient number, since it is larger than the sum of its proper divisors (3776766885).

4611981915 is a wasteful number, since it uses less digits than its factorization.

4611981915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593 (or 3587 counting only the distinct ones).

The product of its digits is 77760, while the sum is 45.

The square root of 4611981915 is about 67911.5742344411. The cubic root of 4611981915 is about 1664.5462443407.

The spelling of 4611981915 in words is "four billion, six hundred eleven million, nine hundred eighty-one thousand, nine hundred fifteen".