1449187690 has 32 divisors (see below), whose sum is σ = 2701361664. Its totient is φ = 559168320.

The previous prime is 1449187687. The next prime is 1449187709. The reversal of 1449187690 is 967819441.

It is a super-2 number, since 2×1449187690² = 4200289921695072200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90897 + ... + 105643.

It is an arithmetic number, because the mean of its divisors is an integer number (84417552).

Almost surely, 2^1449187690 is an apocalyptic number.

1449187690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1449187690 is a deficient number, since it is larger than the sum of its proper divisors (1252173974).

1449187690 is a wasteful number, since it uses less digits than its factorization.

1449187690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15102.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 1449187690 is about 38068.1978822218. The cubic root of 1449187690 is about 1131.6397969312.

The spelling of 1449187690 in words is "one billion, four hundred forty-nine million, one hundred eighty-seven thousand, six hundred ninety".