1154720651 has 8 divisors (see below), whose sum is σ = 1335581184. Its totient is φ = 977835240.

The previous prime is 1154720639. The next prime is 1154720669. The reversal of 1154720651 is 1560274511.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1154720651 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1154720251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 993155 + ... + 994316.

It is an arithmetic number, because the mean of its divisors is an integer number (166947648).

Almost surely, 2^1154720651 is an apocalyptic number.

1154720651 is a deficient number, since it is larger than the sum of its proper divisors (180860533).

1154720651 is an equidigital number, since it uses as much as digits as its factorization.

1154720651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987561.

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1154720651 is about 33981.1808358685. The cubic root of 1154720651 is about 1049.1211545625.

The spelling of 1154720651 in words is "one billion, one hundred fifty-four million, seven hundred twenty thousand, six hundred fifty-one".