1263752890 has 32 divisors (see below), whose sum is σ = 2408382720. Its totient is φ = 476115264.

The previous prime is 1263752863. The next prime is 1263752899. The reversal of 1263752890 is 982573621.

It is not an unprimeable number, because it can be changed into a prime (1263752899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13647 + ... + 52093.

It is an arithmetic number, because the mean of its divisors is an integer number (75261960).

Almost surely, 2^1263752890 is an apocalyptic number.

1263752890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1263752890 is a deficient number, since it is larger than the sum of its proper divisors (1144629830).

1263752890 is a wasteful number, since it uses less digits than its factorization.

1263752890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38646.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 1263752890 is about 35549.3022435040. The cubic root of 1263752890 is about 1081.1535713620.

The spelling of 1263752890 in words is "one billion, two hundred sixty-three million, seven hundred fifty-two thousand, eight hundred ninety".