1248632782 has 4 divisors (see below), whose sum is σ = 1872949176. Its totient is φ = 624316390.

The previous prime is 1248632761. The next prime is 1248632783. The reversal of 1248632782 is 2872368421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2872368421 = 13 ⋅220951417.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248632783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312158194 + ... + 312158197.

It is an arithmetic number, because the mean of its divisors is an integer number (468237294).

Almost surely, 2^1248632782 is an apocalyptic number.

1248632782 is a deficient number, since it is larger than the sum of its proper divisors (624316394).

1248632782 is an equidigital number, since it uses as much as digits as its factorization.

1248632782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624316393.

The product of its digits is 258048, while the sum is 43.

The square root of 1248632782 is about 35335.9983869142. The cubic root of 1248632782 is about 1076.8244574859.

The spelling of 1248632782 in words is "one billion, two hundred forty-eight million, six hundred thirty-two thousand, seven hundred eighty-two".