19151375450 has 24 divisors (see below), whose sum is σ = 35634689472. Its totient is φ = 7657726320.

The previous prime is 19151375407. The next prime is 19151375459. The reversal of 19151375450 is 5457315191.

It is a junction number, because it is equal to n+sod(n) for n = 19151375398 and 19151375407.

It is not an unprimeable number, because it can be changed into a prime (19151375459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69137 + ... + 207563.

It is an arithmetic number, because the mean of its divisors is an integer number (1484778728).

Almost surely, 2^19151375450 is an apocalyptic number.

19151375450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19151375450 is a deficient number, since it is larger than the sum of its proper divisors (16483314022).

19151375450 is a wasteful number, since it uses less digits than its factorization.

19151375450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141206 (or 141201 counting only the distinct ones).

The product of its (nonzero) digits is 94500, while the sum is 41.

The spelling of 19151375450 in words is "nineteen billion, one hundred fifty-one million, three hundred seventy-five thousand, four hundred fifty".