1157192993 has 4 divisors (see below), whose sum is σ = 1262392368. Its totient is φ = 1051993620.

The previous prime is 1157192987. The next prime is 1157192999. The reversal of 1157192993 is 3992917511.

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.

It is an interprime number because it is at equal distance from previous prime (1157192987) and next prime (1157192999).

It is a cyclic number.

It is not a de Polignac number, because 1157192993 - 2⁴ = 1157192977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1157192999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52599671 + ... + 52599692.

It is an arithmetic number, because the mean of its divisors is an integer number (315598092).

Almost surely, 2^1157192993 is an apocalyptic number.

It is an amenable number.

1157192993 is a deficient number, since it is larger than the sum of its proper divisors (105199375).

1157192993 is a wasteful number, since it uses less digits than its factorization.

1157192993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105199374.

The product of its digits is 153090, while the sum is 47.

The square root of 1157192993 is about 34017.5394906804. The cubic root of 1157192993 is about 1049.8693693876.

The spelling of 1157192993 in words is "one billion, one hundred fifty-seven million, one hundred ninety-two thousand, nine hundred ninety-three".