1490139743 has 8 divisors (see below), whose sum is σ = 1584874368. Its totient is φ = 1396191744.

The previous prime is 1490139731. The next prime is 1490139769. The reversal of 1490139743 is 3479310941.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1490139743 - 2²⁰ = 1489091167 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1490139743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490139143) 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, 192746 + ... + 200327.

It is an arithmetic number, because the mean of its divisors is an integer number (198109296).

Almost surely, 2^1490139743 is an apocalyptic number.

1490139743 is a deficient number, since it is larger than the sum of its proper divisors (94734625).

1490139743 is a wasteful number, since it uses less digits than its factorization.

1490139743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393313.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 1490139743 is about 38602.3282069877. The cubic root of 1490139743 is about 1142.2004648991.

The spelling of 1490139743 in words is "one billion, four hundred ninety million, one hundred thirty-nine thousand, seven hundred forty-three".