9091857970397 has 8 divisors (see below), whose sum is σ = 9096155501472. Its totient is φ = 9087561428400.

The previous prime is 9091857970373. The next prime is 9091857970409. The reversal of 9091857970397 is 7930797581909.

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

It is a cyclic number.

It is not a de Polignac number, because 9091857970397 - 2⁶ = 9091857970333 is a prime.

It is a super-2 number, since 2×9091857970397² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9091857970997) 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, 18475022 + ... + 18960752.

It is an arithmetic number, because the mean of its divisors is an integer number (1137019437684).

Almost surely, 2^{9091857970397} is an apocalyptic number.

It is an amenable number.

9091857970397 is a deficient number, since it is larger than the sum of its proper divisors (4297531075).

9091857970397 is a wasteful number, since it uses less digits than its factorization.

9091857970397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494539.

The product of its (nonzero) digits is 270050760, while the sum is 74.

The spelling of 9091857970397 in words is "nine trillion, ninety-one billion, eight hundred fifty-seven million, nine hundred seventy thousand, three hundred ninety-seven".