1901087 has 2 divisors, whose sum is σ = 1901088. Its totient is φ = 1901086.

The previous prime is 1901033. The next prime is 1901089. The reversal of 1901087 is 7801091.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1901087 - 2⁸ = 1900831 is a prime.

It is a super-2 number, since 2×1901087² = 7228263563138, which contains 22 as substring.

Together with 1901089, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1901089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950543 + 950544.

It is an arithmetic number, because the mean of its divisors is an integer number (950544).

2^1901087 is an apocalyptic number.

1901087 is a deficient number, since it is larger than the sum of its proper divisors (1).

1901087 is an equidigital number, since it uses as much as digits as its factorization.

1901087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 26.

The square root of 1901087 is about 1378.7991151723. The cubic root of 1901087 is about 123.8798480611.

The spelling of 1901087 in words is "one million, nine hundred one thousand, eighty-seven".