1902013 has 4 divisors (see below), whose sum is σ = 1905120. Its totient is φ = 1898908.

The previous prime is 1902007. The next prime is 1902029. The reversal of 1902013 is 3102091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3102091 = 137 ⋅22643.

It is a cyclic number.

It is not a de Polignac number, because 1902013 - 2⁵ = 1901981 is a prime.

It is a Duffinian number.

1902013 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1902053) 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, 295 + ... + 1972.

It is an arithmetic number, because the mean of its divisors is an integer number (476280).

2^1902013 is an apocalyptic number.

It is an amenable number.

1902013 is a deficient number, since it is larger than the sum of its proper divisors (3107).

1902013 is an equidigital number, since it uses as much as digits as its factorization.

1902013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3106.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1902013 is about 1379.1348737524. The cubic root of 1902013 is about 123.8999583312.

The spelling of 1902013 in words is "one million, nine hundred two thousand, thirteen".