1901249 has 16 divisors (see below), whose sum is σ = 2323200. Its totient is φ = 1552320.

The previous prime is 1901231. The next prime is 1901267. The reversal of 1901249 is 9421091.

It is an interprime number because it is at equal distance from previous prime (1901231) and next prime (1901267).

It is not a de Polignac number, because 1901249 - 2²⁰ = 852673 is a prime.

It is a super-2 number, since 2×1901249² = 7229495520002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1901209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7769 + ... + 8009.

It is an arithmetic number, because the mean of its divisors is an integer number (145200).

2^1901249 is an apocalyptic number.

It is an amenable number.

1901249 is a deficient number, since it is larger than the sum of its proper divisors (421951).

1901249 is an equidigital number, since it uses as much as digits as its factorization.

1901249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1901249 is about 1378.8578606949. The cubic root of 1901249 is about 123.8833667437.

The spelling of 1901249 in words is "one million, nine hundred one thousand, two hundred forty-nine".