1061808465 has 32 divisors (see below), whose sum is σ = 1759864320. Its totient is φ = 546027776.

The previous prime is 1061808439. The next prime is 1061808467. The reversal of 1061808465 is 5648081601.

It is not a de Polignac number, because 1061808465 - 2¹³ = 1061800273 is a prime.

It is a super-2 number, since 2×1061808465² = 2254874432691312450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1061808467) 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 31 ways as a sum of consecutive naturals, for example, 478699 + ... + 480911.

It is an arithmetic number, because the mean of its divisors is an integer number (54995760).

Almost surely, 2^1061808465 is an apocalyptic number.

1061808465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1061808465 is a deficient number, since it is larger than the sum of its proper divisors (698055855).

1061808465 is a wasteful number, since it uses less digits than its factorization.

1061808465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3353.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 1061808465 is about 32585.4026367636. The cubic root of 1061808465 is about 1020.1923464634.

The spelling of 1061808465 in words is "one billion, sixty-one million, eight hundred eight thousand, four hundred sixty-five".