1572349249 has 2 divisors, whose sum is σ = 1572349250. Its totient is φ = 1572349248.

The previous prime is 1572349241. The next prime is 1572349279. The reversal of 1572349249 is 9429432751.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1308124224 + 264225025 = 36168^2 + 16255^2 .

It is a cyclic number.

It is not a de Polignac number, because 1572349249 - 2³ = 1572349241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1572349199 and 1572349208.

It is not a weakly prime, because it can be changed into another prime (1572349241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786174624 + 786174625.

It is an arithmetic number, because the mean of its divisors is an integer number (786174625).

Almost surely, 2^1572349249 is an apocalyptic number.

It is an amenable number.

1572349249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1572349249 is an equidigital number, since it uses as much as digits as its factorization.

1572349249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 1572349249 is about 39652.8592789978. The cubic root of 1572349249 is about 1162.8302986210.

The spelling of 1572349249 in words is "one billion, five hundred seventy-two million, three hundred forty-nine thousand, two hundred forty-nine".