1390649533 has 8 divisors (see below), whose sum is σ = 1711568768. Its totient is φ = 1100294064.

The previous prime is 1390649527. The next prime is 1390649537. The reversal of 1390649533 is 3359460931.

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 1390649533 - 2⁹ = 1390649021 is a prime.

It is a super-2 number, since 2×1390649533² = 3867812247266236178, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1390649533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1390649537) 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, 7640841 + ... + 7641022.

It is an arithmetic number, because the mean of its divisors is an integer number (213946096).

Almost surely, 2^1390649533 is an apocalyptic number.

1390649533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1390649533 is a deficient number, since it is larger than the sum of its proper divisors (320919235).

1390649533 is a wasteful number, since it uses less digits than its factorization.

1390649533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15281883.

The product of its (nonzero) digits is 262440, while the sum is 43.

The square root of 1390649533 is about 37291.4136632013. The cubic root of 1390649533 is about 1116.1928376683.

The spelling of 1390649533 in words is "one billion, three hundred ninety million, six hundred forty-nine thousand, five hundred thirty-three".