1939081 has 8 divisors (see below), whose sum is σ = 2032128. Its totient is φ = 1848000.

The previous prime is 1939073. The next prime is 1939097. The reversal of 1939081 is 1809391.

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

It is a cyclic number.

It is not a de Polignac number, because 1939081 - 2³ = 1939073 is a prime.

It is a super-2 number, since 2×1939081² = 7520070249122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1939381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1761 + ... + 2641.

It is an arithmetic number, because the mean of its divisors is an integer number (254016).

2^1939081 is an apocalyptic number.

1939081 is the 881-st heptagonal number.

It is an amenable number.

1939081 is a deficient number, since it is larger than the sum of its proper divisors (93047).

1939081 is an equidigital number, since it uses as much as digits as its factorization.

1939081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 1939081 is about 1392.5088868657. The cubic root of 1939081 is about 124.6996736773.

The spelling of 1939081 in words is "one million, nine hundred thirty-nine thousand, eighty-one".