1015157661 has 8 divisors (see below), whose sum is σ = 1546906944. Its totient is φ = 580090080.

The previous prime is 1015157659. The next prime is 1015157699. The reversal of 1015157661 is 1667515101.

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

It is not a de Polignac number, because 1015157661 - 2¹ = 1015157659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015157621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24170400 + ... + 24170441.

It is an arithmetic number, because the mean of its divisors is an integer number (193363368).

Almost surely, 2^1015157661 is an apocalyptic number.

It is an amenable number.

1015157661 is a deficient number, since it is larger than the sum of its proper divisors (531749283).

1015157661 is an equidigital number, since it uses as much as digits as its factorization.

1015157661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48340851.

The product of its (nonzero) digits is 6300, while the sum is 33.

The square root of 1015157661 is about 31861.5388988040. The cubic root of 1015157661 is about 1005.0272381915.

The spelling of 1015157661 in words is "one billion, fifteen million, one hundred fifty-seven thousand, six hundred sixty-one".