1940374779 has 16 divisors (see below), whose sum is σ = 2970781440. Its totient is φ = 1103528160.

The previous prime is 1940374771. The next prime is 1940374789. The reversal of 1940374779 is 9774730491.

It is not a de Polignac number, because 1940374779 - 2³ = 1940374771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1940374771) 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, 214524 + ... + 223385.

It is an arithmetic number, because the mean of its divisors is an integer number (185673840).

Almost surely, 2^1940374779 is an apocalyptic number.

1940374779 is a deficient number, since it is larger than the sum of its proper divisors (1030406661).

1940374779 is a wasteful number, since it uses less digits than its factorization.

1940374779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438130.

The product of its (nonzero) digits is 1333584, while the sum is 51.

The square root of 1940374779 is about 44049.6853450737. The cubic root of 1940374779 is about 1247.2740123679.

The spelling of 1940374779 in words is "one billion, nine hundred forty million, three hundred seventy-four thousand, seven hundred seventy-nine".