1157370493 has 2 divisors, whose sum is σ = 1157370494. Its totient is φ = 1157370492.

The previous prime is 1157370479. The next prime is 1157370547. The reversal of 1157370493 is 3940737511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1145280964 + 12089529 = 33842^2 + 3477^2 .

It is an emirp because it is prime and its reverse (3940737511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1157370493 - 2⁹ = 1157369981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1157370443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 578685246 + 578685247.

It is an arithmetic number, because the mean of its divisors is an integer number (578685247).

Almost surely, 2^1157370493 is an apocalyptic number.

It is an amenable number.

1157370493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1157370493 is an equidigital number, since it uses as much as digits as its factorization.

1157370493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 79380, while the sum is 40.

The square root of 1157370493 is about 34020.1483388888. The cubic root of 1157370493 is about 1049.9230459097.

The spelling of 1157370493 in words is "one billion, one hundred fifty-seven million, three hundred seventy thousand, four hundred ninety-three".