1490649460 has 24 divisors (see below), whose sum is σ = 3131250696. Its totient is φ = 596090880.

The previous prime is 1490649449. The next prime is 1490649469. The reversal of 1490649460 is 649460941.

It can be written as a sum of positive squares in 4 ways, for example, as 108743184 + 1381906276 = 10428^2 + 37174^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490649469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81304 + ... + 97936.

It is an arithmetic number, because the mean of its divisors is an integer number (130468779).

Almost surely, 2^1490649460 is an apocalyptic number.

1490649460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1490649460 is an abundant number, since it is smaller than the sum of its proper divisors (1640601236).

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

1490649460 is a wasteful number, since it uses less digits than its factorization.

1490649460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21123 (or 21121 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 1490649460 is about 38608.9297960977. The cubic root of 1490649460 is about 1142.3306836985.

The spelling of 1490649460 in words is "one billion, four hundred ninety million, six hundred forty-nine thousand, four hundred sixty".