1797142190 has 8 divisors (see below), whose sum is σ = 3234855960. Its totient is φ = 718856872.

The previous prime is 1797142181. The next prime is 1797142211. The reversal of 1797142190 is 912417971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1797142190² = 6459440102155992200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89857100 + ... + 89857119.

It is an arithmetic number, because the mean of its divisors is an integer number (404356995).

Almost surely, 2^1797142190 is an apocalyptic number.

1797142190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1797142190 is a deficient number, since it is larger than the sum of its proper divisors (1437713770).

1797142190 is a wasteful number, since it uses less digits than its factorization.

1797142190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179714226.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 1797142190 is about 42392.7138786844. The cubic root of 1797142190 is about 1215.7962885716.

The spelling of 1797142190 in words is "one billion, seven hundred ninety-seven million, one hundred forty-two thousand, one hundred ninety".