1299481810 has 64 divisors (see below), whose sum is σ = 2640677760. Its totient is φ = 456261120.

The previous prime is 1299481783. The next prime is 1299481811. The reversal of 1299481810 is 181849921.

It is a happy number.

It is a super-2 number, since 2×1299481810² = 3377305949041752200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1299481811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 564582 + ... + 566878.

It is an arithmetic number, because the mean of its divisors is an integer number (41260590).

Almost surely, 2^1299481810 is an apocalyptic number.

1299481810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1299481810 is an abundant number, since it is smaller than the sum of its proper divisors (1341195950).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1299481810 is a wasteful number, since it uses less digits than its factorization.

1299481810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 1299481810 is about 36048.3260360311. The cubic root of 1299481810 is about 1091.2478512563.

The spelling of 1299481810 in words is "one billion, two hundred ninety-nine million, four hundred eighty-one thousand, eight hundred ten".