19493004640974 has 32 divisors (see below), whose sum is σ = 41292192337920. Its totient is φ = 6113543044992.

The previous prime is 19493004640927. The next prime is 19493004640979. The reversal of 19493004640974 is 47904640039491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19493004640979) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29505934 + ... + 30159345.

It is an arithmetic number, because the mean of its divisors is an integer number (1290381010560).

Almost surely, 2^{19493004640974} is an apocalyptic number.

19493004640974 is an abundant number, since it is smaller than the sum of its proper divisors (21799187696946).

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

19493004640974 is a wasteful number, since it uses less digits than its factorization.

19493004640974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59668504.

The product of its (nonzero) digits is 23514624, while the sum is 60.

The spelling of 19493004640974 in words is "nineteen trillion, four hundred ninety-three billion, four million, six hundred forty thousand, nine hundred seventy-four".