1248399190 has 16 divisors (see below), whose sum is σ = 2247902928. Its totient is φ = 499185376.

The previous prime is 1248399181. The next prime is 1248399197. The reversal of 1248399190 is 919938421.

It is a happy number.

It is a super-2 number, since 2×1248399190² = 3117001075185312200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1248399190.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248399197) 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, 10584 + ... + 51076.

It is an arithmetic number, because the mean of its divisors is an integer number (140493933).

Almost surely, 2^1248399190 is an apocalyptic number.

1248399190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1248399190 is a deficient number, since it is larger than the sum of its proper divisors (999503738).

1248399190 is a wasteful number, since it uses less digits than its factorization.

1248399190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43583.

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 1248399190 is about 35332.6929344481. The cubic root of 1248399190 is about 1076.7573031633.

The spelling of 1248399190 in words is "one billion, two hundred forty-eight million, three hundred ninety-nine thousand, one hundred ninety".