19745912950 has 48 divisors (see below), whose sum is σ = 38529185760. Its totient is φ = 7518560000.

The previous prime is 19745912941. The next prime is 19745912983. The reversal of 19745912950 is 5921954791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7050 + ... + 198850.

It is an arithmetic number, because the mean of its divisors is an integer number (802691370).

Almost surely, 2^19745912950 is an apocalyptic number.

19745912950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19745912950 is a deficient number, since it is larger than the sum of its proper divisors (18783272810).

19745912950 is a wasteful number, since it uses less digits than its factorization.

19745912950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191913 (or 191908 counting only the distinct ones).

The product of its (nonzero) digits is 1020600, while the sum is 52.

The spelling of 19745912950 in words is "nineteen billion, seven hundred forty-five million, nine hundred twelve thousand, nine hundred fifty".