1652228397 has 48 divisors (see below), whose sum is σ = 2513300400. Its totient is φ = 1044556800.

The previous prime is 1652228381. The next prime is 1652228401. The reversal of 1652228397 is 7938222561.

1652228397 is a `hidden beast` number, since 16 + 522 + 28 + 3 + 97 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 22410756 + 1629817641 = 4734^2 + 40371^2 .

It is not a de Polignac number, because 1652228397 - 2⁴ = 1652228381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1652228197) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6141979 + ... + 6142247.

It is an arithmetic number, because the mean of its divisors is an integer number (52360425).

Almost surely, 2^1652228397 is an apocalyptic number.

It is an amenable number.

1652228397 is a deficient number, since it is larger than the sum of its proper divisors (861072003).

1652228397 is a wasteful number, since it uses less digits than its factorization.

1652228397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638 (or 635 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 1652228397 is about 40647.6124391089. The cubic root of 1652228397 is about 1182.1974748868.

The spelling of 1652228397 in words is "one billion, six hundred fifty-two million, two hundred twenty-eight thousand, three hundred ninety-seven".