1490701809249 has 9 divisors (see below), whose sum is σ = 2153241237459. Its totient is φ = 993798764280.

The previous prime is 1490701809241. The next prime is 1490701809263. The reversal of 1490701809249 is 9429081070941.

The square root of 1490701809249 is 1220943.

It is a perfect power (a square), and thus also a powerful number.

1490701809249 is a `hidden beast` number, since 1 + 490 + 70 + 1 + 80 + 9 + 2 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1008704861649 + 481996947600 = 1004343^2 + 694260^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1490701809249 - 2³ = 1490701809241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1490701809195 and 1490701809204.

It is not an unprimeable number, because it can be changed into a prime (1490701809241) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3459339 + ... + 3866319.

Almost surely, 2^{1490701809249} is an apocalyptic number.

1490701809249 is the 1220943-rd square number.

1490701809249 is the 610472-nd centered octagonal number.

It is an amenable number.

1490701809249 is a deficient number, since it is larger than the sum of its proper divisors (662539428210).

1490701809249 is an frugal number, since it uses more digits than its factorization.

1490701809249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813968 (or 406984 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 54.

The spelling of 1490701809249 in words is "one trillion, four hundred ninety billion, seven hundred one million, eight hundred nine thousand, two hundred forty-nine".