1969840994 has 16 divisors (see below), whose sum is σ = 3224965536. Its totient is φ = 894940800.

The previous prime is 1969840991. The next prime is 1969841009. The reversal of 1969840994 is 4990489691.

It is not an unprimeable number, because it can be changed into a prime (1969840991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25874 + ... + 67890.

It is an arithmetic number, because the mean of its divisors is an integer number (201560346).

Almost surely, 2^1969840994 is an apocalyptic number.

1969840994 is a deficient number, since it is larger than the sum of its proper divisors (1255124542).

1969840994 is a wasteful number, since it uses less digits than its factorization.

1969840994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44161.

The product of its (nonzero) digits is 5038848, while the sum is 59.

The square root of 1969840994 is about 44382.8907801193. The cubic root of 1969840994 is about 1253.5559532846. Note that the first 3 decimals are identical.

The spelling of 1969840994 in words is "one billion, nine hundred sixty-nine million, eight hundred forty thousand, nine hundred ninety-four".