19900000277 has 4 divisors (see below), whose sum is σ = 20085981696. Its totient is φ = 19714018860.

The previous prime is 19900000247. The next prime is 19900000279. The reversal of 19900000277 is 77200000991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19900000277 - 2²⁰ = 19898951701 is a prime.

It is a super-2 number, since 2×19900000277² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19900000279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92990549 + ... + 92990762.

It is an arithmetic number, because the mean of its divisors is an integer number (5021495424).

Almost surely, 2^19900000277 is an apocalyptic number.

It is an amenable number.

19900000277 is a deficient number, since it is larger than the sum of its proper divisors (185981419).

19900000277 is a wasteful number, since it uses less digits than its factorization.

19900000277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185981418.

The product of its (nonzero) digits is 7938, while the sum is 35.

The spelling of 19900000277 in words is "nineteen billion, nine hundred million, two hundred seventy-seven", and thus it is an aban number.