1964990 has 8 divisors (see below), whose sum is σ = 3537000. Its totient is φ = 785992.

The previous prime is 1964987. The next prime is 1965077. The reversal of 1964990 is 994691.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1964990² = 7722371400200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98240 + ... + 98259.

It is an arithmetic number, because the mean of its divisors is an integer number (442125).

2^1964990 is an apocalyptic number.

1964990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1964990 is a deficient number, since it is larger than the sum of its proper divisors (1572010).

1964990 is a wasteful number, since it uses less digits than its factorization.

1964990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196506.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 1964990 is about 1401.7810100012. The cubic root of 1964990 is about 125.2526091650.

Subtracting from 1964990 its reverse (994691), we obtain a cube (970299 = 99³).

The spelling of 1964990 in words is "one million, nine hundred sixty-four thousand, nine hundred ninety".