19958035740 has 24 divisors (see below), whose sum is σ = 55882500240. Its totient is φ = 5322142848.

The previous prime is 19958035729. The next prime is 19958035813. The reversal of 19958035740 is 4753085991.

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, 166316905 + ... + 166317024.

It is an arithmetic number, because the mean of its divisors is an integer number (2328437510).

Almost surely, 2^19958035740 is an apocalyptic number.

19958035740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19958035740 is an abundant number, since it is smaller than the sum of its proper divisors (35924464500).

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

19958035740 is a wasteful number, since it uses less digits than its factorization.

19958035740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332633941 (or 332633939 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 19958035740 in words is "nineteen billion, nine hundred fifty-eight million, thirty-five thousand, seven hundred forty".