1246748890 has 48 divisors (see below), whose sum is σ = 2392205400. Its totient is φ = 467735552.

The previous prime is 1246748887. The next prime is 1246748911. The reversal of 1246748890 is 988476421.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 27552001 + 1219196889 = 5249^2 + 34917^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1123656 + ... + 1124764.

Almost surely, 2^1246748890 is an apocalyptic number.

1246748890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1246748890 is a deficient number, since it is larger than the sum of its proper divisors (1145456510).

1246748890 is a wasteful number, since it uses less digits than its factorization.

1246748890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1539 (or 1522 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The square root of 1246748890 is about 35309.3314861667. The cubic root of 1246748890 is about 1076.2826269593.

The spelling of 1246748890 in words is "one billion, two hundred forty-six million, seven hundred forty-eight thousand, eight hundred ninety".