1819993392975 has 24 divisors (see below), whose sum is σ = 3014400494592. Its totient is φ = 968939029600.

The previous prime is 1819993392967. The next prime is 1819993393033. The reversal of 1819993392975 is 5792933999181.

It is not a de Polignac number, because 1819993392975 - 2³ = 1819993392967 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (75).

It is a junction number, because it is equal to n+sod(n) for n = 1819993392897 and 1819993392906.

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, 21508911 + ... + 21593360.

It is an arithmetic number, because the mean of its divisors is an integer number (125600020608).

Almost surely, 2^{1819993392975} is an apocalyptic number.

1819993392975 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1819993392975 is a deficient number, since it is larger than the sum of its proper divisors (1194407101617).

1819993392975 is a wasteful number, since it uses less digits than its factorization.

1819993392975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43102847 (or 43102842 counting only the distinct ones).

The product of its digits is 297606960, while the sum is 75.

The spelling of 1819993392975 in words is "one trillion, eight hundred nineteen billion, nine hundred ninety-three million, three hundred ninety-two thousand, nine hundred seventy-five".