919031393130 has 16 divisors (see below), whose sum is σ = 2205675343584. Its totient is φ = 245075038160.

The previous prime is 919031393113. The next prime is 919031393131. The reversal of 919031393130 is 31393130919.

It is a super-2 number, since 2×919031393130² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (919031393131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15317189856 + ... + 15317189915.

It is an arithmetic number, because the mean of its divisors is an integer number (137854708974).

Almost surely, 2^919031393130 is an apocalyptic number.

919031393130 is an abundant number, since it is smaller than the sum of its proper divisors (1286643950454).

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

919031393130 is a wasteful number, since it uses less digits than its factorization.

919031393130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30634379781.

The product of its (nonzero) digits is 59049, while the sum is 42.

The spelling of 919031393130 in words is "nine hundred nineteen billion, thirty-one million, three hundred ninety-three thousand, one hundred thirty".