1157223459 has 16 divisors (see below), whose sum is σ = 1820272640. Its totient is φ = 639938880.

The previous prime is 1157223451. The next prime is 1157223467. The reversal of 1157223459 is 9543227511.

It is an interprime number because it is at equal distance from previous prime (1157223451) and next prime (1157223467).

It is not a de Polignac number, because 1157223459 - 2³ = 1157223451 is a prime.

It is a super-2 number, since 2×1157223459² = 2678332268119849362, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157223451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 888154 + ... + 889455.

It is an arithmetic number, because the mean of its divisors is an integer number (113767040).

Almost surely, 2^1157223459 is an apocalyptic number.

1157223459 is a deficient number, since it is larger than the sum of its proper divisors (663049181).

1157223459 is a wasteful number, since it uses less digits than its factorization.

1157223459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1777650.

The product of its digits is 75600, while the sum is 39.

The square root of 1157223459 is about 34017.9872861403. The cubic root of 1157223459 is about 1049.8785827858.

The spelling of 1157223459 in words is "one billion, one hundred fifty-seven million, two hundred twenty-three thousand, four hundred fifty-nine".