1932228990 has 48 divisors (see below), whose sum is σ = 5026027968. Its totient is φ = 515032128.

The previous prime is 1932228989. The next prime is 1932229031. The reversal of 1932228990 is 998222391.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 324379 + ... + 330281.

It is an arithmetic number, because the mean of its divisors is an integer number (104708916).

Almost surely, 2^1932228990 is an apocalyptic number.

1932228990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1932228990 is an abundant number, since it is smaller than the sum of its proper divisors (3093798978).

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

1932228990 is a wasteful number, since it uses less digits than its factorization.

1932228990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9553 (or 9550 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 1932228990 is about 43957.1267259360. The cubic root of 1932228990 is about 1245.5261916671.

The spelling of 1932228990 in words is "one billion, nine hundred thirty-two million, two hundred twenty-eight thousand, nine hundred ninety".