1994997715 has 16 divisors (see below), whose sum is σ = 2477039616. Its totient is φ = 1540879200.

The previous prime is 1994997707. The next prime is 1994997733. The reversal of 1994997715 is 5177994991.

It is not a de Polignac number, because 1994997715 - 2³ = 1994997707 is a prime.

It is a Duffinian 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, 51874 + ... + 81736.

It is an arithmetic number, because the mean of its divisors is an integer number (154814976).

Almost surely, 2^1994997715 is an apocalyptic number.

1994997715 is a deficient number, since it is larger than the sum of its proper divisors (482041901).

1994997715 is a wasteful number, since it uses less digits than its factorization.

1994997715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30330.

The product of its digits is 6429780, while the sum is 61.

The square root of 1994997715 is about 44665.3972891768. The cubic root of 1994997715 is about 1258.8697589027.

The spelling of 1994997715 in words is "one billion, nine hundred ninety-four million, nine hundred ninety-seven thousand, seven hundred fifteen".