1449607920 has 80 divisors (see below), whose sum is σ = 4648764960. Its totient is φ = 373230592.

The previous prime is 1449607919. The next prime is 1449607927. The reversal of 1449607920 is 297069441.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1449607927) 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, 97179 + ... + 111098.

It is an arithmetic number, because the mean of its divisors is an integer number (58109562).

Almost surely, 2^1449607920 is an apocalyptic number.

1449607920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1449607920 is an abundant number, since it is smaller than the sum of its proper divisors (3199157040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1449607920 is a wasteful number, since it uses less digits than its factorization.

1449607920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208322 (or 208316 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 1449607920 is about 38073.7169186304. The cubic root of 1449607920 is about 1131.7491692453.

The spelling of 1449607920 in words is "one billion, four hundred forty-nine million, six hundred seven thousand, nine hundred twenty".