1481561081 has 32 divisors (see below), whose sum is σ = 2093952000. Its totient is φ = 1009558080.

The previous prime is 1481561069. The next prime is 1481561089. The reversal of 1481561081 is 1801651841.

It is a cyclic number.

It is not a de Polignac number, because 1481561081 - 2¹⁰ = 1481560057 is a prime.

It is a super-2 number, since 2×1481561081² = 4390046473467777122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1481561089) 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, 19931 + ... + 57968.

It is an arithmetic number, because the mean of its divisors is an integer number (65436000).

Almost surely, 2^1481561081 is an apocalyptic number.

1481561081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1481561081 is a deficient number, since it is larger than the sum of its proper divisors (612390919).

1481561081 is a wasteful number, since it uses less digits than its factorization.

1481561081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77949.

The product of its (nonzero) digits is 7680, while the sum is 35.

The square root of 1481561081 is about 38491.0519601634. The cubic root of 1481561081 is about 1140.0043810748.

The spelling of 1481561081 in words is "one billion, four hundred eighty-one million, five hundred sixty-one thousand, eighty-one".