1157697542 has 8 divisors (see below), whose sum is σ = 1792564032. Its totient is φ = 560176200.

The previous prime is 1157697523. The next prime is 1157697553. The reversal of 1157697542 is 2457967511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9336209 + ... + 9336332.

It is an arithmetic number, because the mean of its divisors is an integer number (224070504).

Almost surely, 2^1157697542 is an apocalyptic number.

1157697542 is a deficient number, since it is larger than the sum of its proper divisors (634866490).

1157697542 is a wasteful number, since it uses less digits than its factorization.

1157697542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18672574.

The product of its digits is 529200, while the sum is 47.

The square root of 1157697542 is about 34024.9546950470. The cubic root of 1157697542 is about 1050.0219321194.

The spelling of 1157697542 in words is "one billion, one hundred fifty-seven million, six hundred ninety-seven thousand, five hundred forty-two".