1449208690 has 32 divisors (see below), whose sum is σ = 2800946304. Its totient is φ = 537895680.

The previous prime is 1449208667. The next prime is 1449208697. The reversal of 1449208690 is 968029441.

It is a super-2 number, since 2×1449208690² = 4200411654343032200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1449208697) 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, 47964 + ... + 72103.

It is an arithmetic number, because the mean of its divisors is an integer number (87529572).

Almost surely, 2^1449208690 is an apocalyptic number.

1449208690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1449208690 is a deficient number, since it is larger than the sum of its proper divisors (1351737614).

1449208690 is a wasteful number, since it uses less digits than its factorization.

1449208690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120162.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 1449208690 is about 38068.4737020018. The cubic root of 1449208690 is about 1131.6452630557.

The spelling of 1449208690 in words is "one billion, four hundred forty-nine million, two hundred eight thousand, six hundred ninety".