1249148345 has 8 divisors (see below), whose sum is σ = 1501721664. Its totient is φ = 997489584.

The previous prime is 1249148311. The next prime is 1249148347. The reversal of 1249148345 is 5438419421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1249148345 - 2¹² = 1249144249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1249148347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225629 + ... + 231098.

It is an arithmetic number, because the mean of its divisors is an integer number (187715208).

Almost surely, 2^1249148345 is an apocalyptic number.

It is an amenable number.

1249148345 is a deficient number, since it is larger than the sum of its proper divisors (252573319).

1249148345 is an equidigital number, since it uses as much as digits as its factorization.

1249148345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457279.

The product of its digits is 138240, while the sum is 41.

The square root of 1249148345 is about 35343.2927866095. The cubic root of 1249148345 is about 1076.9726447573.

The spelling of 1249148345 in words is "one billion, two hundred forty-nine million, one hundred forty-eight thousand, three hundred forty-five".