1145251615 has 8 divisors (see below), whose sum is σ = 1421691840. Its totient is φ = 884608032.

The previous prime is 1145251603. The next prime is 1145251621. The reversal of 1145251615 is 5161525411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1145251615 - 2²⁷ = 1011033887 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3948999 + ... + 3949288.

It is an arithmetic number, because the mean of its divisors is an integer number (177711480).

Almost surely, 2^1145251615 is an apocalyptic number.

1145251615 is a deficient number, since it is larger than the sum of its proper divisors (276440225).

1145251615 is an equidigital number, since it uses as much as digits as its factorization.

1145251615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7898321.

The product of its digits is 6000, while the sum is 31.

The square root of 1145251615 is about 33841.5663792325. The cubic root of 1145251615 is about 1046.2455832620.

The spelling of 1145251615 in words is "one billion, one hundred forty-five million, two hundred fifty-one thousand, six hundred fifteen".