1157019433 has 4 divisors (see below), whose sum is σ = 1157123968. Its totient is φ = 1156914900.

The previous prime is 1157019377. The next prime is 1157019469. The reversal of 1157019433 is 3349107511.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3349107511 = 509 ⋅6579779.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1157019433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157011433) 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 3 ways as a sum of consecutive naturals, for example, 33393 + ... + 58558.

It is an arithmetic number, because the mean of its divisors is an integer number (289280992).

Almost surely, 2^1157019433 is an apocalyptic number.

It is an amenable number.

1157019433 is a deficient number, since it is larger than the sum of its proper divisors (104535).

1157019433 is an equidigital number, since it uses as much as digits as its factorization.

1157019433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104534.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 1157019433 is about 34014.9883580753. The cubic root of 1157019433 is about 1049.8168790253.

The spelling of 1157019433 in words is "one billion, one hundred fifty-seven million, nineteen thousand, four hundred thirty-three".