901923140 has 12 divisors (see below), whose sum is σ = 1894038636. Its totient is φ = 360769248.

The previous prime is 901923109. The next prime is 901923149. The reversal of 901923140 is 41329109.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 326019136 + 575904004 = 18056^2 + 23998^2 .

It is not an unprimeable number, because it can be changed into a prime (901923149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22548059 + ... + 22548098.

It is an arithmetic number, because the mean of its divisors is an integer number (157836553).

Almost surely, 2^901923140 is an apocalyptic number.

It is an amenable number.

901923140 is an abundant number, since it is smaller than the sum of its proper divisors (992115496).

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

901923140 is a wasteful number, since it uses less digits than its factorization.

901923140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45096166 (or 45096164 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 901923140 is about 30032.0352290683. The cubic root of 901923140 is about 966.1765884178.

The spelling of 901923140 in words is "nine hundred one million, nine hundred twenty-three thousand, one hundred forty".