1797142097 has 8 divisors (see below), whose sum is σ = 1910822400. Its totient is φ = 1684346944.

The previous prime is 1797142069. The next prime is 1797142117. The reversal of 1797142097 is 7902417971.

It is a happy number.

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

It is not a de Polignac number, because 1797142097 - 2⁶ = 1797142033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1797142057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217097 + ... + 225222.

It is an arithmetic number, because the mean of its divisors is an integer number (238852800).

Almost surely, 2^1797142097 is an apocalyptic number.

1797142097 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1797142097 is a deficient number, since it is larger than the sum of its proper divisors (113680303).

1797142097 is a wasteful number, since it uses less digits than its factorization.

1797142097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442575.

The product of its (nonzero) digits is 222264, while the sum is 47.

The square root of 1797142097 is about 42392.7127817978. The cubic root of 1797142097 is about 1215.7962675996.

The spelling of 1797142097 in words is "one billion, seven hundred ninety-seven million, one hundred forty-two thousand, ninety-seven".