1157993542 has 4 divisors (see below), whose sum is σ = 1736990316. Its totient is φ = 578996770.

The previous prime is 1157993533. The next prime is 1157993587. The reversal of 1157993542 is 2453997511.

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

It is a junction number, because it is equal to n+sod(n) for n = 1157993492 and 1157993501.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289498384 + ... + 289498387.

It is an arithmetic number, because the mean of its divisors is an integer number (434247579).

Almost surely, 2^1157993542 is an apocalyptic number.

1157993542 is a deficient number, since it is larger than the sum of its proper divisors (578996774).

1157993542 is an equidigital number, since it uses as much as digits as its factorization.

1157993542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578996773.

The product of its digits is 340200, while the sum is 46.

The square root of 1157993542 is about 34029.3041656746. The cubic root of 1157993542 is about 1050.1114143302. Note that the first 3 decimals are identical.

The spelling of 1157993542 in words is "one billion, one hundred fifty-seven million, nine hundred ninety-three thousand, five hundred forty-two".