2129794394 has 64 divisors (see below), whose sum is σ = 4104656640. Its totient is φ = 806077440.

The previous prime is 2129794393. The next prime is 2129794397. The reversal of 2129794394 is 4934979212.

It is not an unprimeable number, because it can be changed into a prime (2129794393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 594629 + ... + 598199.

It is an arithmetic number, because the mean of its divisors is an integer number (64135260).

Almost surely, 2^2129794394 is an apocalyptic number.

2129794394 is a deficient number, since it is larger than the sum of its proper divisors (1974862246).

2129794394 is a wasteful number, since it uses less digits than its factorization.

2129794394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3735.

The product of its digits is 979776, while the sum is 50.

The square root of 2129794394 is about 46149.6954919531. The cubic root of 2129794394 is about 1286.6069504204.

The spelling of 2129794394 in words is "two billion, one hundred twenty-nine million, seven hundred ninety-four thousand, three hundred ninety-four".