19000402694 has 32 divisors (see below), whose sum is σ = 35119076160. Its totient is φ = 7507769472.

The previous prime is 19000402693. The next prime is 19000402709. The reversal of 19000402694 is 49620400091.

It is a super-2 number, since 2×19000402694² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19000402693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94052 + ... + 216440.

It is an arithmetic number, because the mean of its divisors is an integer number (1097471130).

Almost surely, 2^19000402694 is an apocalyptic number.

19000402694 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19000402694 is a deficient number, since it is larger than the sum of its proper divisors (16118673466).

19000402694 is a wasteful number, since it uses less digits than its factorization.

19000402694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123264.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 19000402694 in words is "nineteen billion, four hundred two thousand, six hundred ninety-four".