19145149955 has 16 divisors (see below), whose sum is σ = 23133250080. Its totient is φ = 15210302208.

The previous prime is 19145149943. The next prime is 19145149963. The reversal of 19145149955 is 55994154191.

It is a Cunningham number, because it is equal to 138366²-1.

It is a cyclic number.

It is not a de Polignac number, because 19145149955 - 2¹⁰ = 19145148931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19145149897 and 19145149906.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 677999 + ... + 705671.

It is an arithmetic number, because the mean of its divisors is an integer number (1445828130).

Almost surely, 2^19145149955 is an apocalyptic number.

19145149955 is a deficient number, since it is larger than the sum of its proper divisors (3988100125).

19145149955 is a wasteful number, since it uses less digits than its factorization.

19145149955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28630.

The product of its digits is 1458000, while the sum is 53.

The spelling of 19145149955 in words is "nineteen billion, one hundred forty-five million, one hundred forty-nine thousand, nine hundred fifty-five".