919130646 has 64 divisors (see below), whose sum is σ = 2200928256. Its totient is φ = 250192800.

The previous prime is 919130627. The next prime is 919130647. The reversal of 919130646 is 646031919.

It is a super-2 number, since 2×919130646² = 1689602288832754632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (919130647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260031 + ... + 263541.

It is an arithmetic number, because the mean of its divisors is an integer number (34389504).

Almost surely, 2^919130646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 919130646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1100464128).

919130646 is an abundant number, since it is smaller than the sum of its proper divisors (1281797610).

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

919130646 is a wasteful number, since it uses less digits than its factorization.

919130646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3817.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 919130646 is about 30317.1675128136. The cubic root of 919130646 is about 972.2823804028.

The spelling of 919130646 in words is "nine hundred nineteen million, one hundred thirty thousand, six hundred forty-six".