1652399947 has 8 divisors (see below), whose sum is σ = 1821202992. Its totient is φ = 1486694400.

The previous prime is 1652399941. The next prime is 1652399977. The reversal of 1652399947 is 7499932561.

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 1652399947 - 2²³ = 1644011339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1652399941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 773254 + ... + 775387.

It is an arithmetic number, because the mean of its divisors is an integer number (227650374).

Almost surely, 2^1652399947 is an apocalyptic number.

1652399947 is a deficient number, since it is larger than the sum of its proper divisors (168803045).

1652399947 is a wasteful number, since it uses less digits than its factorization.

1652399947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548749.

The product of its digits is 3674160, while the sum is 55.

The square root of 1652399947 is about 40649.7225943794. The cubic root of 1652399947 is about 1182.2383891169.

The spelling of 1652399947 in words is "one billion, six hundred fifty-two million, three hundred ninety-nine thousand, nine hundred forty-seven".