1972903 has 4 divisors (see below), whose sum is σ = 2076760. Its totient is φ = 1869048.

The previous prime is 1972891. The next prime is 1972913. The reversal of 1972903 is 3092791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1972903 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1972913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51900 + ... + 51937.

It is an arithmetic number, because the mean of its divisors is an integer number (519190).

2^1972903 is an apocalyptic number.

1972903 is a deficient number, since it is larger than the sum of its proper divisors (103857).

1972903 is a wasteful number, since it uses less digits than its factorization.

1972903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103856.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 1972903 is about 1404.6006549906. The cubic root of 1972903 is about 125.4205144213.

The spelling of 1972903 in words is "one million, nine hundred seventy-two thousand, nine hundred three".