1157429397 has 8 divisors (see below), whose sum is σ = 1558519200. Its totient is φ = 763979600.

The previous prime is 1157429393. The next prime is 1157429407. The reversal of 1157429397 is 7939247511.

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 1157429397 - 2² = 1157429393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157429393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1909647 + ... + 1910252.

It is an arithmetic number, because the mean of its divisors is an integer number (194814900).

Almost surely, 2^1157429397 is an apocalyptic number.

It is an amenable number.

1157429397 is a deficient number, since it is larger than the sum of its proper divisors (401089803).

1157429397 is a wasteful number, since it uses less digits than its factorization.

1157429397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3820003.

The product of its digits is 476280, while the sum is 48.

The square root of 1157429397 is about 34021.0140501426. The cubic root of 1157429397 is about 1049.9408574398.

The spelling of 1157429397 in words is "one billion, one hundred fifty-seven million, four hundred twenty-nine thousand, three hundred ninety-seven".