1661010315 has 16 divisors (see below), whose sum is σ = 2714162688. Its totient is φ = 867023456.

The previous prime is 1661010289. The next prime is 1661010317. The reversal of 1661010315 is 5130101661.

It is a cyclic number.

It is not a de Polignac number, because 1661010315 - 2⁷ = 1661010187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1661010317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1177317 + ... + 1178726.

It is an arithmetic number, because the mean of its divisors is an integer number (169635168).

Almost surely, 2^1661010315 is an apocalyptic number.

1661010315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1661010315 is a deficient number, since it is larger than the sum of its proper divisors (1053152373).

1661010315 is a wasteful number, since it uses less digits than its factorization.

1661010315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356098.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 1661010315 is about 40755.4942921810. The cubic root of 1661010315 is about 1184.2883119998.

Adding to 1661010315 its reverse (5130101661), we get a palindrome (6791111976).

The spelling of 1661010315 in words is "one billion, six hundred sixty-one million, ten thousand, three hundred fifteen".