1901097 has 32 divisors (see below), whose sum is σ = 3173760. Its totient is φ = 1114560.

The previous prime is 1901089. The next prime is 1901117. The reversal of 1901097 is 7901091.

It is not a de Polignac number, because 1901097 - 2³ = 1901089 is a prime.

It is a super-2 number, since 2×1901097² = 7228339606818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 1901097.

It is not an unprimeable number, because it can be changed into a prime (1901027) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10903 + ... + 11075.

It is an arithmetic number, because the mean of its divisors is an integer number (99180).

2^1901097 is an apocalyptic number.

It is an amenable number.

1901097 is a deficient number, since it is larger than the sum of its proper divisors (1272663).

1901097 is a wasteful number, since it uses less digits than its factorization.

1901097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230 (or 224 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 27.

The square root of 1901097 is about 1378.8027415116. The cubic root of 1901097 is about 123.8800652695.

The spelling of 1901097 in words is "one million, nine hundred one thousand, ninety-seven".