2519081961 has 16 divisors (see below), whose sum is σ = 3665606400. Its totient is φ = 1526096720.

The previous prime is 2519081951. The next prime is 2519081977. The reversal of 2519081961 is 1691809152.

It is a cyclic number.

It is not a de Polignac number, because 2519081961 - 2⁷ = 2519081833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2519081951) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74926 + ... + 103208.

It is an arithmetic number, because the mean of its divisors is an integer number (229100400).

Almost surely, 2^2519081961 is an apocalyptic number.

It is an amenable number.

2519081961 is a deficient number, since it is larger than the sum of its proper divisors (1146524439).

2519081961 is a wasteful number, since it uses less digits than its factorization.

2519081961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30996.

The product of its (nonzero) digits is 38880, while the sum is 42.

The square root of 2519081961 is about 50190.4568717998. The cubic root of 2519081961 is about 1360.6531538626.

The spelling of 2519081961 in words is "two billion, five hundred nineteen million, eighty-one thousand, nine hundred sixty-one".