1491902 has 4 divisors (see below), whose sum is σ = 2237856. Its totient is φ = 745950.

The previous prime is 1491863. The next prime is 1491911. The reversal of 1491902 is 2091941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2091941 = 67 ⋅31223.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372974 + ... + 372977.

It is an arithmetic number, because the mean of its divisors is an integer number (559464).

2^1491902 is an apocalyptic number.

1491902 is a deficient number, since it is larger than the sum of its proper divisors (745954).

1491902 is an equidigital number, since it uses as much as digits as its factorization.

1491902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745953.

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

The square root of 1491902 is about 1221.4344026594. The cubic root of 1491902 is about 114.2650547477.

The spelling of 1491902 in words is "one million, four hundred ninety-one thousand, nine hundred two".