1902997 has 16 divisors (see below), whose sum is σ = 2184192. Its totient is φ = 1647360.

The previous prime is 1902991. The next prime is 1903003. The reversal of 1902997 is 7992091.

It is an interprime number because it is at equal distance from previous prime (1902991) and next prime (1903003).

It is a cyclic number.

It is not a de Polignac number, because 1902997 - 2¹⁵ = 1870229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1902991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12043 + ... + 12199.

It is an arithmetic number, because the mean of its divisors is an integer number (136512).

2^1902997 is an apocalyptic number.

1902997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1902997 is a deficient number, since it is larger than the sum of its proper divisors (281195).

1902997 is a wasteful number, since it uses less digits than its factorization.

1902997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228.

The product of its (nonzero) digits is 10206, while the sum is 37.

The square root of 1902997 is about 1379.4915730080. The cubic root of 1902997 is about 123.9213210559.

The spelling of 1902997 in words is "one million, nine hundred two thousand, nine hundred ninety-seven".