19402034 has 4 divisors (see below), whose sum is σ = 29103054. Its totient is φ = 9701016.

The previous prime is 19402003. The next prime is 19402039. The reversal of 19402034 is 43020491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43020491 = 223 ⋅192917.

It can be written as a sum of positive squares in only one way, i.e., 19386409 + 15625 = 4403^2 + 125^2 .

It is not an unprimeable number, because it can be changed into a prime (19402039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4850507 + ... + 4850510.

Almost surely, 2^19402034 is an apocalyptic number.

19402034 is a deficient number, since it is larger than the sum of its proper divisors (9701020).

19402034 is an equidigital number, since it uses as much as digits as its factorization.

19402034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9701019.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 19402034 is about 4404.7740010130. The cubic root of 19402034 is about 268.7091285241.

The spelling of 19402034 in words is "nineteen million, four hundred two thousand, thirty-four".