1661460515 has 16 divisors (see below), whose sum is σ = 2342311776. Its totient is φ = 1115385600.

The previous prime is 1661460503. The next prime is 1661460527. The reversal of 1661460515 is 5150641661.

It is an interprime number because it is at equal distance from previous prime (1661460503) and next prime (1661460527).

It is not a de Polignac number, because 1661460515 - 2⁸ = 1661460259 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1161146 + ... + 1162575.

It is an arithmetic number, because the mean of its divisors is an integer number (146394486).

Almost surely, 2^1661460515 is an apocalyptic number.

1661460515 is a deficient number, since it is larger than the sum of its proper divisors (680851261).

1661460515 is a wasteful number, since it uses less digits than its factorization.

1661460515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2323750.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 1661460515 is about 40761.0170996750. The cubic root of 1661460515 is about 1184.3952987798.

The spelling of 1661460515 in words is "one billion, six hundred sixty-one million, four hundred sixty thousand, five hundred fifteen".