1953399039 has 16 divisors (see below), whose sum is σ = 2784063744. Its totient is φ = 1215262400.

The previous prime is 1953399031. The next prime is 1953399061. The reversal of 1953399039 is 9309933591.

It is a cyclic number.

It is not a de Polignac number, because 1953399039 - 2³ = 1953399031 is a prime.

It is a super-2 number, since 2×1953399039² = 7631535611132247042, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1953398982 and 1953399000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1953399031) 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, 342417 + ... + 348074.

It is an arithmetic number, because the mean of its divisors is an integer number (174003984).

Almost surely, 2^1953399039 is an apocalyptic number.

1953399039 is a deficient number, since it is larger than the sum of its proper divisors (830664705).

1953399039 is a wasteful number, since it uses less digits than its factorization.

1953399039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690558.

The product of its (nonzero) digits is 885735, while the sum is 51.

The square root of 1953399039 is about 44197.2741127776. The cubic root of 1953399039 is about 1250.0584589193.

The spelling of 1953399039 in words is "one billion, nine hundred fifty-three million, three hundred ninety-nine thousand, thirty-nine".