1081401630 has 32 divisors (see below), whose sum is σ = 2597590944. Its totient is φ = 288126336.

The previous prime is 1081401617. The next prime is 1081401631. The reversal of 1081401630 is 361041801.

It is a self number, because there is not a number n which added to its sum of digits gives 1081401630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081401631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21532 + ... + 51248.

It is an arithmetic number, because the mean of its divisors is an integer number (81174717).

Almost surely, 2^1081401630 is an apocalyptic number.

1081401630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1081401630 is an abundant number, since it is smaller than the sum of its proper divisors (1516189314).

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

1081401630 is a wasteful number, since it uses less digits than its factorization.

1081401630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30940.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1081401630 is about 32884.6716571718. The cubic root of 1081401630 is about 1026.4292193936.

The spelling of 1081401630 in words is "one billion, eighty-one million, four hundred one thousand, six hundred thirty".