20191434862 has 16 divisors (see below), whose sum is σ = 31909821840. Its totient is φ = 9555781248.

The previous prime is 20191434853. The next prime is 20191434883. The reversal of 20191434862 is 26843419102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195403 + ... + 280294.

It is an arithmetic number, because the mean of its divisors is an integer number (1994363865).

Almost surely, 2^20191434862 is an apocalyptic number.

20191434862 is a deficient number, since it is larger than the sum of its proper divisors (11718386978).

20191434862 is a wasteful number, since it uses less digits than its factorization.

20191434862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476835.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 20191434862 in words is "twenty billion, one hundred ninety-one million, four hundred thirty-four thousand, eight hundred sixty-two".