2604161540 has 24 divisors (see below), whose sum is σ = 5469699480. Its totient is φ = 1041481728.

The previous prime is 2604161537. The next prime is 2604161551. The reversal of 2604161540 is 451614062.

It can be written as a sum of positive squares in 4 ways, for example, as 1757118724 + 847042816 = 41918^2 + 29104^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 209006 + ... + 221114.

It is an arithmetic number, because the mean of its divisors is an integer number (227904145).

Almost surely, 2^2604161540 is an apocalyptic number.

2604161540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2604161540 is an abundant number, since it is smaller than the sum of its proper divisors (2865537940).

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

2604161540 is a wasteful number, since it uses less digits than its factorization.

2604161540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22871 (or 22869 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 2604161540 is about 51030.9860770885. The cubic root of 2604161540 is about 1375.8021175519.

The spelling of 2604161540 in words is "two billion, six hundred four million, one hundred sixty-one thousand, five hundred forty".