1248699490 has 16 divisors (see below), whose sum is σ = 2248206840. Its totient is φ = 499358080.

The previous prime is 1248699469. The next prime is 1248699497. The reversal of 1248699490 is 949968421.

It can be written as a sum of positive squares in 4 ways, for example, as 1070663841 + 178035649 = 32721^2 + 13343^2 .

It is not an unprimeable number, because it can be changed into a prime (1248699497) 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, 36120 + ... + 61660.

Almost surely, 2^1248699490 is an apocalyptic number.

1248699490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1248699490 is a deficient number, since it is larger than the sum of its proper divisors (999507350).

1248699490 is a wasteful number, since it uses less digits than its factorization.

1248699490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30437.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 1248699490 is about 35336.9422842441. The cubic root of 1248699490 is about 1076.8436335340.

The spelling of 1248699490 in words is "one billion, two hundred forty-eight million, six hundred ninety-nine thousand, four hundred ninety".