1490137765 has 8 divisors (see below), whose sum is σ = 1806600600. Its totient is φ = 1179820032.

The previous prime is 1490137763. The next prime is 1490137787. The reversal of 1490137765 is 5677310941.

It can be written as a sum of positive squares in 4 ways, for example, as 112317604 + 1377820161 = 10598^2 + 37119^2 .

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 1490137765 - 2¹ = 1490137763 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490137763) 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, 1535740 + ... + 1536709.

It is an arithmetic number, because the mean of its divisors is an integer number (225825075).

Almost surely, 2^1490137765 is an apocalyptic number.

It is an amenable number.

1490137765 is a deficient number, since it is larger than the sum of its proper divisors (316462835).

1490137765 is an equidigital number, since it uses as much as digits as its factorization.

1490137765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072551.

The product of its (nonzero) digits is 158760, while the sum is 43.

The square root of 1490137765 is about 38602.3025867629. The cubic root of 1490137765 is about 1142.1999595162.

The spelling of 1490137765 in words is "one billion, four hundred ninety million, one hundred thirty-seven thousand, seven hundred sixty-five".