19948190337 has 24 divisors (see below), whose sum is σ = 30574436256. Its totient is φ = 12489664896.

The previous prime is 19948190333. The next prime is 19948190351. The reversal of 19948190337 is 73309184991.

It is a happy number.

It is not a de Polignac number, because 19948190337 - 2² = 19948190333 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19948190333) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68143 + ... + 211044.

It is an arithmetic number, because the mean of its divisors is an integer number (1273934844).

Almost surely, 2^19948190337 is an apocalyptic number.

19948190337 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

19948190337 is a deficient number, since it is larger than the sum of its proper divisors (10626245919).

19948190337 is a wasteful number, since it uses less digits than its factorization.

19948190337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279677 (or 279674 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 19948190337 in words is "nineteen billion, nine hundred forty-eight million, one hundred ninety thousand, three hundred thirty-seven".