19402143630 has 16 divisors (see below), whose sum is σ = 46565144784. Its totient is φ = 5173904960.

The previous prime is 19402143623. The next prime is 19402143637. The reversal of 19402143630 is 3634120491.

It is an interprime number because it is at equal distance from previous prime (19402143623) and next prime (19402143637).

It is a junction number, because it is equal to n+sod(n) for n = 19402143591 and 19402143600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19402143637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 323369031 + ... + 323369090.

It is an arithmetic number, because the mean of its divisors is an integer number (2910321549).

Almost surely, 2^19402143630 is an apocalyptic number.

19402143630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19402143630 is an abundant number, since it is smaller than the sum of its proper divisors (27163001154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19402143630 is a wasteful number, since it uses less digits than its factorization.

19402143630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646738131.

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 19402143630 in words is "nineteen billion, four hundred two million, one hundred forty-three thousand, six hundred thirty".