1652517149 has 4 divisors (see below), whose sum is σ = 1661647260. Its totient is φ = 1643387040.

The previous prime is 1652517143. The next prime is 1652517161. The reversal of 1652517149 is 9417152561.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9417152561 = 139 ⋅67749299.

It can be written as a sum of positive squares in 2 ways, for example, as 310393924 + 1342123225 = 17618^2 + 36635^2 .

It is a cyclic number.

It is not a de Polignac number, because 1652517149 - 2¹² = 1652513053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1652517143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4564784 + ... + 4565145.

It is an arithmetic number, because the mean of its divisors is an integer number (415411815).

Almost surely, 2^1652517149 is an apocalyptic number.

It is an amenable number.

1652517149 is a deficient number, since it is larger than the sum of its proper divisors (9130111).

1652517149 is an equidigital number, since it uses as much as digits as its factorization.

1652517149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9130110.

The product of its digits is 75600, while the sum is 41.

The square root of 1652517149 is about 40651.1641776715. The cubic root of 1652517149 is about 1182.2663398617.

The spelling of 1652517149 in words is "one billion, six hundred fifty-two million, five hundred seventeen thousand, one hundred forty-nine".