1157144701 has 4 divisors (see below), whose sum is σ = 1157620032. Its totient is φ = 1156669372.

The previous prime is 1157144699. The next prime is 1157144711. The reversal of 1157144701 is 1074417511.

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 a cyclic number.

It is not a de Polignac number, because 1157144701 - 2¹ = 1157144699 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157144711) 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, 233995 + ... + 238888.

It is an arithmetic number, because the mean of its divisors is an integer number (289405008).

Almost surely, 2^1157144701 is an apocalyptic number.

It is an amenable number.

1157144701 is a deficient number, since it is larger than the sum of its proper divisors (475331).

1157144701 is an equidigital number, since it uses as much as digits as its factorization.

1157144701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475330.

The product of its (nonzero) digits is 3920, while the sum is 31.

The square root of 1157144701 is about 34016.8296729722. The cubic root of 1157144701 is about 1049.8547647949.

The spelling of 1157144701 in words is "one billion, one hundred fifty-seven million, one hundred forty-four thousand, seven hundred one".