1939290938 has 8 divisors (see below), whose sum is σ = 3132700788. Its totient is φ = 895057344.

The previous prime is 1939290911. The next prime is 1939290943. The reversal of 1939290938 is 8390929391.

It can be written as a sum of positive squares in 2 ways, for example, as 1698016849 + 241274089 = 41207^2 + 15533^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1939290938.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37294031 + ... + 37294082.

Almost surely, 2^1939290938 is an apocalyptic number.

1939290938 is a deficient number, since it is larger than the sum of its proper divisors (1193409850).

1939290938 is a wasteful number, since it uses less digits than its factorization.

1939290938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74588128.

The product of its (nonzero) digits is 944784, while the sum is 53.

The square root of 1939290938 is about 44037.3811437510. The cubic root of 1939290938 is about 1247.0417379113.

The spelling of 1939290938 in words is "one billion, nine hundred thirty-nine million, two hundred ninety thousand, nine hundred thirty-eight".