1549489022 has 4 divisors (see below), whose sum is σ = 2324233536. Its totient is φ = 774744510.

The previous prime is 1549489003. The next prime is 1549489063. The reversal of 1549489022 is 2209849451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2209849451 = 7247 ⋅304933.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 387372254 + ... + 387372257.

It is an arithmetic number, because the mean of its divisors is an integer number (581058384).

Almost surely, 2^1549489022 is an apocalyptic number.

1549489022 is a deficient number, since it is larger than the sum of its proper divisors (774744514).

1549489022 is an equidigital number, since it uses as much as digits as its factorization.

1549489022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774744513.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 1549489022 is about 39363.5494080501. The cubic root of 1549489022 is about 1157.1673408033.

The spelling of 1549489022 in words is "one billion, five hundred forty-nine million, four hundred eighty-nine thousand, twenty-two".