1545042361 has 4 divisors (see below), whose sum is σ = 1626360400. Its totient is φ = 1463724324.

The previous prime is 1545042347. The next prime is 1545042371. The reversal of 1545042361 is 1632405451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1545042361 - 2⁵ = 1545042329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1545042341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40658991 + ... + 40659028.

It is an arithmetic number, because the mean of its divisors is an integer number (406590100).

Almost surely, 2^1545042361 is an apocalyptic number.

It is an amenable number.

1545042361 is a deficient number, since it is larger than the sum of its proper divisors (81318039).

1545042361 is an equidigital number, since it uses as much as digits as its factorization.

1545042361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81318038.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 1545042361 is about 39307.0268654346. The cubic root of 1545042361 is about 1156.0593495409.

The spelling of 1545042361 in words is "one billion, five hundred forty-five million, forty-two thousand, three hundred sixty-one".