1933990 has 16 divisors (see below), whose sum is σ = 3575952. Its totient is φ = 752544.

The previous prime is 1933979. The next prime is 1933993. The reversal of 1933990 is 993391.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1933993) 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, 2244 + ... + 2983.

It is an arithmetic number, because the mean of its divisors is an integer number (223497).

2^1933990 is an apocalyptic number.

1933990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1933990 is a deficient number, since it is larger than the sum of its proper divisors (1641962).

1933990 is a wasteful number, since it uses less digits than its factorization.

1933990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5271.

The product of its (nonzero) digits is 6561, while the sum is 34.

The square root of 1933990 is about 1390.6796899358. The cubic root of 1933990 is about 124.5904462580.

The spelling of 1933990 in words is "one million, nine hundred thirty-three thousand, nine hundred ninety".