1016661615 has 16 divisors (see below), whose sum is σ = 1635650016. Its totient is φ = 539222400.

The previous prime is 1016661593. The next prime is 1016661623. The reversal of 1016661615 is 5161666101.

It is not a de Polignac number, because 1016661615 - 2¹³ = 1016653423 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184516 + ... + 189945.

It is an arithmetic number, because the mean of its divisors is an integer number (102228126).

Almost surely, 2^1016661615 is an apocalyptic number.

1016661615 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1016661615 is a deficient number, since it is larger than the sum of its proper divisors (618988401).

1016661615 is a wasteful number, since it uses less digits than its factorization.

1016661615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374650.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 1016661615 is about 31885.1315662959. The cubic root of 1016661615 is about 1005.5233085628.

The spelling of 1016661615 in words is "one billion, sixteen million, six hundred sixty-one thousand, six hundred fifteen".