1229657493 has 16 divisors (see below), whose sum is σ = 1655177216. Its totient is φ = 811989360.

The previous prime is 1229657489. The next prime is 1229657503. The reversal of 1229657493 is 3947569221.

It is not a de Polignac number, because 1229657493 - 2² = 1229657489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1229657423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146028 + ... + 154218.

It is an arithmetic number, because the mean of its divisors is an integer number (103448576).

Almost surely, 2^1229657493 is an apocalyptic number.

It is an amenable number.

1229657493 is a deficient number, since it is larger than the sum of its proper divisors (425519723).

1229657493 is a wasteful number, since it uses less digits than its factorization.

1229657493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8664.

The product of its digits is 816480, while the sum is 48.

The square root of 1229657493 is about 35066.4724915410. The cubic root of 1229657493 is about 1071.3418089311.

The spelling of 1229657493 in words is "one billion, two hundred twenty-nine million, six hundred fifty-seven thousand, four hundred ninety-three".