3649871580 has 24 divisors (see below), whose sum is σ = 10219640592. Its totient is φ = 973299072.

The previous prime is 3649871573. The next prime is 3649871581. The reversal of 3649871580 is 851789463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649871581) 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, 30415537 + ... + 30415656.

It is an arithmetic number, because the mean of its divisors is an integer number (425818358).

Almost surely, 2^3649871580 is an apocalyptic number.

3649871580 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3649871580 is an abundant number, since it is smaller than the sum of its proper divisors (6569769012).

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

3649871580 is a wasteful number, since it uses less digits than its factorization.

3649871580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60831205 (or 60831203 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The square root of 3649871580 is about 60414.1670471422. The cubic root of 3649871580 is about 1539.6636669230.

The spelling of 3649871580 in words is "three billion, six hundred forty-nine million, eight hundred seventy-one thousand, five hundred eighty".