3765555040 has 48 divisors (see below), whose sum is σ = 9580446288. Its totient is φ = 1390358016.

The previous prime is 3765555019. The next prime is 3765555043. The reversal of 3765555040 is 405555673.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 3765554984 and 3765555002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3765555043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 903102 + ... + 907261.

It is an arithmetic number, because the mean of its divisors is an integer number (199592631).

Almost surely, 2^3765555040 is an apocalyptic number.

It is an amenable number.

3765555040 is an abundant number, since it is smaller than the sum of its proper divisors (5814891248).

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

3765555040 is a wasteful number, since it uses less digits than its factorization.

3765555040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810391 (or 1810383 counting only the distinct ones).

The product of its (nonzero) digits is 315000, while the sum is 40.

The square root of 3765555040 is about 61364.1185058500. The cubic root of 3765555040 is about 1555.7614285647.

The spelling of 3765555040 in words is "three billion, seven hundred sixty-five million, five hundred fifty-five thousand, forty".