3775912920 has 288 divisors, whose sum is σ = 13550593680. Its totient is φ = 911139840.

The previous prime is 3775912901. The next prime is 3775912969. The reversal of 3775912920 is 292195773.

3775912920 is a `hidden beast` number, since 37 + 7 + 591 + 2 + 9 + 20 = 666.

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 71 ways as a sum of consecutive naturals, for example, 3223935 + ... + 3225105.

Almost surely, 2^3775912920 is an apocalyptic number.

3775912920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3775912920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6775296840).

3775912920 is an abundant number, since it is smaller than the sum of its proper divisors (9774680760).

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

3775912920 is a wasteful number, since it uses less digits than its factorization.

3775912920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267 (or 1247 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 3775912920 is about 61448.4574257157. The cubic root of 3775912920 is about 1557.1865958432.

The spelling of 3775912920 in words is "three billion, seven hundred seventy-five million, nine hundred twelve thousand, nine hundred twenty".