1880631 has 8 divisors (see below), whose sum is σ = 2786160. Its totient is φ = 1253736.

The previous prime is 1880603. The next prime is 1880633. The reversal of 1880631 is 1360881.

It is not a de Polignac number, because 1880631 - 2¹⁰ = 1879607 is a prime.

It is a super-2 number, since 2×1880631² = 7073545916322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 69653 = 1880631 / (1 + 8 + 8 + 0 + 6 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 1880595 and 1880604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1880633) 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, 34800 + ... + 34853.

It is an arithmetic number, because the mean of its divisors is an integer number (348270).

2^1880631 is an apocalyptic number.

1880631 is a deficient number, since it is larger than the sum of its proper divisors (905529).

1880631 is an equidigital number, since it uses as much as digits as its factorization.

1880631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69662 (or 69656 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1880631 is about 1371.3610027998. The cubic root of 1880631 is about 123.4339224835.

The spelling of 1880631 in words is "one million, eight hundred eighty thousand, six hundred thirty-one".