1925990 has 16 divisors (see below), whose sum is σ = 3782160. Its totient is φ = 700320.

The previous prime is 1925971. The next prime is 1925993. The reversal of 1925990 is 995291.

It is a self number, because there is not a number n which added to its sum of digits gives 1925990.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1925993) 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, 8645 + ... + 8864.

It is an arithmetic number, because the mean of its divisors is an integer number (236385).

2^1925990 is an apocalyptic number.

1925990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1925990 is a deficient number, since it is larger than the sum of its proper divisors (1856170).

1925990 is a wasteful number, since it uses less digits than its factorization.

1925990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17527.

The product of its (nonzero) digits is 7290, while the sum is 35.

The square root of 1925990 is about 1387.8004179276. The cubic root of 1925990 is about 124.4184182983.

The spelling of 1925990 in words is "one million, nine hundred twenty-five thousand, nine hundred ninety".