19394450070 has 32 divisors (see below), whose sum is σ = 48996506880. Its totient is φ = 4899650400.

The previous prime is 19394450029. The next prime is 19394450107. The reversal of 19394450070 is 7005449391.

It is a super-2 number, since 2×19394450070² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17012106 + ... + 17013245.

It is an arithmetic number, because the mean of its divisors is an integer number (1531140840).

Almost surely, 2^19394450070 is an apocalyptic number.

19394450070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19394450070 is an abundant number, since it is smaller than the sum of its proper divisors (29602056810).

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

19394450070 is a wasteful number, since it uses less digits than its factorization.

19394450070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34025380.

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 19394450070 in words is "nineteen billion, three hundred ninety-four million, four hundred fifty thousand, seventy".