1208921010 has 64 divisors (see below), whose sum is σ = 3176682624. Its totient is φ = 292006400.

The previous prime is 1208920987. The next prime is 1208921011. The reversal of 1208921010 is 101298021.

It is a super-2 number, since 2×1208921010² = 2922980016838840200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1208921011) 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, 86212 + ... + 99248.

It is an arithmetic number, because the mean of its divisors is an integer number (49635666).

Almost surely, 2^1208921010 is an apocalyptic number.

1208921010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1208921010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1588341312).

1208921010 is an abundant number, since it is smaller than the sum of its proper divisors (1967761614).

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

1208921010 is a wasteful number, since it uses less digits than its factorization.

1208921010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13339.

The product of its (nonzero) digits is 288, while the sum is 24.

The square root of 1208921010 is about 34769.5414119887. The cubic root of 1208921010 is about 1065.2854003786.

The spelling of 1208921010 in words is "one billion, two hundred eight million, nine hundred twenty-one thousand, ten".