1490398733 has 12 divisors (see below), whose sum is σ = 1517681088. Its totient is φ = 1463585760.

The previous prime is 1490398673. The next prime is 1490398783. The reversal of 1490398733 is 3378930941.

It is a happy number.

It is not a de Polignac number, because 1490398733 - 2²⁸ = 1221963277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490398783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1635548 + ... + 1636458.

It is an arithmetic number, because the mean of its divisors is an integer number (126473424).

Almost surely, 2^1490398733 is an apocalyptic number.

It is an amenable number.

1490398733 is a deficient number, since it is larger than the sum of its proper divisors (27282355).

1490398733 is an frugal number, since it uses more digits than its factorization.

1490398733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1364 (or 1291 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 1490398733 is about 38605.6826516512. The cubic root of 1490398733 is about 1142.2666334947.

The spelling of 1490398733 in words is "one billion, four hundred ninety million, three hundred ninety-eight thousand, seven hundred thirty-three".