1541665380 has 48 divisors (see below), whose sum is σ = 4319328384. Its totient is φ = 410856960.

The previous prime is 1541665379. The next prime is 1541665397. The reversal of 1541665380 is 835661451.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102844 + ... + 116876.

It is an arithmetic number, because the mean of its divisors is an integer number (89986008).

Almost surely, 2^1541665380 is an apocalyptic number.

1541665380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1541665380 is an abundant number, since it is smaller than the sum of its proper divisors (2777663004).

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

1541665380 is a wasteful number, since it uses less digits than its factorization.

1541665380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15876 (or 15874 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 1541665380 is about 39264.0469131749. The cubic root of 1541665380 is about 1155.2164733588.

The spelling of 1541665380 in words is "one billion, five hundred forty-one million, six hundred sixty-five thousand, three hundred eighty".