1611399087 has 12 divisors (see below), whose sum is σ = 2332033704. Its totient is φ = 1072208880.

The previous prime is 1611399047. The next prime is 1611399109. The reversal of 1611399087 is 7809931161.

It is not a de Polignac number, because 1611399087 - 2²² = 1607204783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611399037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 166464 + ... + 175877.

It is an arithmetic number, because the mean of its divisors is an integer number (194336142).

Almost surely, 2^1611399087 is an apocalyptic number.

1611399087 is a deficient number, since it is larger than the sum of its proper divisors (720634617).

1611399087 is a wasteful number, since it uses less digits than its factorization.

1611399087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342870 (or 342867 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 1611399087 is about 40142.2357000703. The cubic root of 1611399087 is about 1172.3781193938.

The spelling of 1611399087 in words is "one billion, six hundred eleven million, three hundred ninety-nine thousand, eighty-seven".