1539463229 has 2 divisors, whose sum is σ = 1539463230. Its totient is φ = 1539463228.

The previous prime is 1539463217. The next prime is 1539463243. The reversal of 1539463229 is 9223649351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1520844004 + 18619225 = 38998^2 + 4315^2 .

It is a cyclic number.

It is not a de Polignac number, because 1539463229 - 2⁴ = 1539463213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1539463229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1539463279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 769731614 + 769731615.

It is an arithmetic number, because the mean of its divisors is an integer number (769731615).

Almost surely, 2^1539463229 is an apocalyptic number.

It is an amenable number.

1539463229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1539463229 is an equidigital number, since it uses as much as digits as its factorization.

1539463229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 44.

The square root of 1539463229 is about 39235.9940488323. The cubic root of 1539463229 is about 1154.6661651463. Note that the first 3 decimals are identical.

The spelling of 1539463229 in words is "one billion, five hundred thirty-nine million, four hundred sixty-three thousand, two hundred twenty-nine".