1920612388 has 12 divisors (see below), whose sum is σ = 3365940592. Its totient is φ = 958915080.

The previous prime is 1920612361. The next prime is 1920612413. The reversal of 1920612388 is 8832160291.

It is a self number, because there is not a number n which added to its sum of digits gives 1920612388.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344670 + ... + 350197.

Almost surely, 2^1920612388 is an apocalyptic number.

It is an amenable number.

1920612388 is a deficient number, since it is larger than the sum of its proper divisors (1445328204).

1920612388 is a wasteful number, since it uses less digits than its factorization.

1920612388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695562 (or 695560 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 1920612388 is about 43824.7919333338. The cubic root of 1920612388 is about 1243.0251294393.

The spelling of 1920612388 in words is "one billion, nine hundred twenty million, six hundred twelve thousand, three hundred eighty-eight".