945621380 has 24 divisors (see below), whose sum is σ = 2166333120. Its totient is φ = 343862240.

The previous prime is 945621377. The next prime is 945621409. The reversal of 945621380 is 83126549.

It is a happy number.

It is a super-3 number, since 3×945621380³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2148920 + ... + 2149359.

It is an arithmetic number, because the mean of its divisors is an integer number (90263880).

Almost surely, 2^945621380 is an apocalyptic number.

It is an amenable number.

945621380 is an abundant number, since it is smaller than the sum of its proper divisors (1220711740).

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

945621380 is a wasteful number, since it uses less digits than its factorization.

945621380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4298299 (or 4298297 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 945621380 is about 30750.9573834702. The cubic root of 945621380 is about 981.5349332516.

The spelling of 945621380 in words is "nine hundred forty-five million, six hundred twenty-one thousand, three hundred eighty".