1999340794 has 64 divisors (see below), whose sum is σ = 3600754560. Its totient is φ = 821882880.

The previous prime is 1999340789. The next prime is 1999340897. The reversal of 1999340794 is 4970439991.

It is a super-2 number, since 2×1999340794² = 7994727221105100872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3654829 + ... + 3655375.

It is an arithmetic number, because the mean of its divisors is an integer number (56261790).

Almost surely, 2^1999340794 is an apocalyptic number.

1999340794 is a deficient number, since it is larger than the sum of its proper divisors (1601413766).

1999340794 is a wasteful number, since it uses less digits than its factorization.

1999340794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943.

The product of its (nonzero) digits is 2204496, while the sum is 55.

The square root of 1999340794 is about 44713.9887954542. The cubic root of 1999340794 is about 1259.7826100978.

The spelling of 1999340794 in words is "one billion, nine hundred ninety-nine million, three hundred forty thousand, seven hundred ninety-four".