1490197680 has 240 divisors, whose sum is σ = 5174906880. Its totient is φ = 384072192.

The previous prime is 1490197673. The next prime is 1490197693. The reversal of 1490197680 is 867910941.

It is a happy number.

1490197680 is a `hidden beast` number, since 1 + 490 + 19 + 76 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3931731 + ... + 3932109.

It is an arithmetic number, because the mean of its divisors is an integer number (21562112).

Almost surely, 2^1490197680 is an apocalyptic number.

1490197680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1490197680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2587453440).

1490197680 is an abundant number, since it is smaller than the sum of its proper divisors (3684709200).

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

1490197680 is a wasteful number, since it uses less digits than its factorization.

1490197680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568 (or 559 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 1490197680 is about 38603.0786337049. The cubic root of 1490197680 is about 1142.2152677190.

The spelling of 1490197680 in words is "one billion, four hundred ninety million, one hundred ninety-seven thousand, six hundred eighty".