897951819 has 8 divisors (see below), whose sum is σ = 1204439040. Its totient is φ = 595049576.

The previous prime is 897951793. The next prime is 897951827. The reversal of 897951819 is 918159798.

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 897951819 - 2²³ = 889563211 is a prime.

It is a super-2 number, since 2×897951819² = 1612634938490817522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (897931819) 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, 895659 + ... + 896660.

It is an arithmetic number, because the mean of its divisors is an integer number (150554880).

Almost surely, 2^897951819 is an apocalyptic number.

897951819 is a deficient number, since it is larger than the sum of its proper divisors (306487221).

897951819 is a wasteful number, since it uses less digits than its factorization.

897951819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792489.

The product of its digits is 1632960, while the sum is 57.

The square root of 897951819 is about 29965.8442063627. The cubic root of 897951819 is about 964.7564220081.

The spelling of 897951819 in words is "eight hundred ninety-seven million, nine hundred fifty-one thousand, eight hundred nineteen".