1649769319 has 8 divisors (see below), whose sum is σ = 1833706512. Its totient is φ = 1471491840.

The previous prime is 1649769311. The next prime is 1649769353. The reversal of 1649769319 is 9139679461.

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 1649769319 - 2³ = 1649769311 is a prime.

It is a super-2 number, since 2×1649769319² = 5443477611827447522, 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 1649769319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649769311) 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, 1414314 + ... + 1415479.

It is an arithmetic number, because the mean of its divisors is an integer number (229213314).

Almost surely, 2^1649769319 is an apocalyptic number.

1649769319 is a deficient number, since it is larger than the sum of its proper divisors (183937193).

1649769319 is a wasteful number, since it uses less digits than its factorization.

1649769319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2829857.

The product of its digits is 2204496, while the sum is 55.

The square root of 1649769319 is about 40617.3524371050. The cubic root of 1649769319 is about 1181.6106796511.

The spelling of 1649769319 in words is "one billion, six hundred forty-nine million, seven hundred sixty-nine thousand, three hundred nineteen".