2015668453 has 4 divisors (see below), whose sum is σ = 2080690048. Its totient is φ = 1950646860.

The previous prime is 2015668451. The next prime is 2015668469. The reversal of 2015668453 is 3548665102.

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 2015668453 - 2¹ = 2015668451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015668451) 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, 32510751 + ... + 32510812.

It is an arithmetic number, because the mean of its divisors is an integer number (520172512).

Almost surely, 2^2015668453 is an apocalyptic number.

It is an amenable number.

2015668453 is a deficient number, since it is larger than the sum of its proper divisors (65021595).

2015668453 is an equidigital number, since it uses as much as digits as its factorization.

2015668453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65021594.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 2015668453 is about 44896.1964201869. The cubic root of 2015668453 is about 1263.2026640787.

The spelling of 2015668453 in words is "two billion, fifteen million, six hundred sixty-eight thousand, four hundred fifty-three".