1147641557 has 8 divisors (see below), whose sum is σ = 1203561600. Its totient is φ = 1092223440.

The previous prime is 1147641533. The next prime is 1147641569. The reversal of 1147641557 is 7551467411.

It is a happy number.

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

It is not a de Polignac number, because 1147641557 - 2⁸ = 1147641301 is a prime.

It is a super-2 number, since 2×1147641557² = 2634162286706768498, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147643557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120794 + ... + 129947.

It is an arithmetic number, because the mean of its divisors is an integer number (150445200).

Almost surely, 2^1147641557 is an apocalyptic number.

It is an amenable number.

1147641557 is a deficient number, since it is larger than the sum of its proper divisors (55920043).

1147641557 is a wasteful number, since it uses less digits than its factorization.

1147641557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250963.

The product of its digits is 117600, while the sum is 41.

The square root of 1147641557 is about 33876.8587239136. The cubic root of 1147641557 is about 1046.9728554456.

The spelling of 1147641557 in words is "one billion, one hundred forty-seven million, six hundred forty-one thousand, five hundred fifty-seven".