1899940315679 has 16 divisors (see below), whose sum is σ = 2172903003648. Its totient is φ = 1627363667232.

The previous prime is 1899940315643. The next prime is 1899940315681. The reversal of 1899940315679 is 9765130499981.

It is a cyclic number.

It is not a de Polignac number, because 1899940315679 - 2⁸ = 1899940315423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1899940315639) 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, 79129094 + ... + 79153100.

It is an arithmetic number, because the mean of its divisors is an integer number (135806437728).

Almost surely, 2^{1899940315679} is an apocalyptic number.

1899940315679 is a deficient number, since it is larger than the sum of its proper divisors (272962687969).

1899940315679 is a wasteful number, since it uses less digits than its factorization.

1899940315679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31574.

The product of its (nonzero) digits is 132269760, while the sum is 71.

The spelling of 1899940315679 in words is "one trillion, eight hundred ninety-nine billion, nine hundred forty million, three hundred fifteen thousand, six hundred seventy-nine".