19490870700 has 288 divisors, whose sum is σ = 75381286400. Its totient is φ = 4220501760.

The previous prime is 19490870671. The next prime is 19490870701. The reversal of 19490870700 is 707809491.

19490870700 is a `hidden beast` number, since 19 + 490 + 87 + 0 + 70 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (19490870701) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 331962 + ... + 386238.

Almost surely, 2^19490870700 is an apocalyptic number.

19490870700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19490870700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37690643200).

19490870700 is an abundant number, since it is smaller than the sum of its proper divisors (55890415700).

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

19490870700 is a wasteful number, since it uses less digits than its factorization.

19490870700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54326 (or 54313 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The spelling of 19490870700 in words is "nineteen billion, four hundred ninety million, eight hundred seventy thousand, seven hundred".