1097390318 has 4 divisors (see below), whose sum is σ = 1646085480. Its totient is φ = 548695158.

The previous prime is 1097390317. The next prime is 1097390369. The reversal of 1097390318 is 8130937901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8130937901 = 29 ⋅280377169.

It is a super-2 number, since 2×1097390318² = 2408531020080282248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1097390311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274347578 + ... + 274347581.

It is an arithmetic number, because the mean of its divisors is an integer number (411521370).

Almost surely, 2^1097390318 is an apocalyptic number.

1097390318 is a deficient number, since it is larger than the sum of its proper divisors (548695162).

1097390318 is an equidigital number, since it uses as much as digits as its factorization.

1097390318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548695161.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 1097390318 is about 33126.8821050216. The cubic root of 1097390318 is about 1031.4631287785.

The spelling of 1097390318 in words is "one billion, ninety-seven million, three hundred ninety thousand, three hundred eighteen".