1661413510 has 16 divisors (see below), whose sum is σ = 3120568416. Its totient is φ = 635671168.

The previous prime is 1661413469. The next prime is 1661413511. The reversal of 1661413510 is 153141661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1661413511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3611539 + ... + 3611998.

It is an arithmetic number, because the mean of its divisors is an integer number (195035526).

Almost surely, 2^1661413510 is an apocalyptic number.

1661413510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1661413510 is a deficient number, since it is larger than the sum of its proper divisors (1459154906).

1661413510 is a wasteful number, since it uses less digits than its factorization.

1661413510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7223567.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 1661413510 is about 40760.4405030171. The cubic root of 1661413510 is about 1184.3841292845.

The spelling of 1661413510 in words is "one billion, six hundred sixty-one million, four hundred thirteen thousand, five hundred ten".