1995912640974 has 32 divisors (see below), whose sum is σ = 4562452290816. Its totient is φ = 570214972800.

The previous prime is 1995912640919. The next prime is 1995912640991. The reversal of 1995912640974 is 4790462195991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1376452 + ... + 2426199.

It is an arithmetic number, because the mean of its divisors is an integer number (142576634088).

Almost surely, 2^{1995912640974} is an apocalyptic number.

1995912640974 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1995912640974 is an abundant number, since it is smaller than the sum of its proper divisors (2566539649842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1995912640974 is a wasteful number, since it uses less digits than its factorization.

1995912640974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815160.

The product of its (nonzero) digits is 44089920, while the sum is 66.

The spelling of 1995912640974 in words is "one trillion, nine hundred ninety-five billion, nine hundred twelve million, six hundred forty thousand, nine hundred seventy-four".