1953394320 has 80 divisors (see below), whose sum is σ = 6250885632. Its totient is φ = 504099840.

The previous prime is 1953394319. The next prime is 1953394327. The reversal of 1953394320 is 234933591.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (1953394327) 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, 123837 + ... + 138716.

Almost surely, 2^1953394320 is an apocalyptic number.

1953394320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1953394320 is an abundant number, since it is smaller than the sum of its proper divisors (4297491312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1953394320 is a wasteful number, since it uses less digits than its factorization.

1953394320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262600 (or 262594 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 1953394320 is about 44197.2207271000. The cubic root of 1953394320 is about 1250.0574522927.

The spelling of 1953394320 in words is "one billion, nine hundred fifty-three million, three hundred ninety-four thousand, three hundred twenty".