3561358920 has 128 divisors (see below), whose sum is σ = 12631507200. Its totient is φ = 785949696.

The previous prime is 3561358919. The next prime is 3561358921. The reversal of 3561358920 is 298531653.

It is an interprime number because it is at equal distance from previous prime (3561358919) and next prime (3561358921).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (3561358921) 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 31 ways as a sum of consecutive naturals, for example, 48739 + ... + 97458.

It is an arithmetic number, because the mean of its divisors is an integer number (98683650).

Almost surely, 2^3561358920 is an apocalyptic number.

3561358920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3561358920 is an abundant number, since it is smaller than the sum of its proper divisors (9070148280).

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

3561358920 is a wasteful number, since it uses less digits than its factorization.

3561358920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146247 (or 146243 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 3561358920 is about 59677.1222496528. The cubic root of 3561358920 is about 1527.1156045973.

The spelling of 3561358920 in words is "three billion, five hundred sixty-one million, three hundred fifty-eight thousand, nine hundred twenty".