1157293946 has 4 divisors (see below), whose sum is σ = 1735940922. Its totient is φ = 578646972.

The previous prime is 1157293931. The next prime is 1157293993. The reversal of 1157293946 is 6493927511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 634485721 + 522808225 = 25189^2 + 22865^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1157293946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289323485 + ... + 289323488.

Almost surely, 2^1157293946 is an apocalyptic number.

1157293946 is a deficient number, since it is larger than the sum of its proper divisors (578646976).

1157293946 is an equidigital number, since it uses as much as digits as its factorization.

1157293946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578646975.

The product of its digits is 408240, while the sum is 47.

The square root of 1157293946 is about 34019.0232957973. The cubic root of 1157293946 is about 1049.8998985448.

The spelling of 1157293946 in words is "one billion, one hundred fifty-seven million, two hundred ninety-three thousand, nine hundred forty-six".