1661412348 has 36 divisors (see below), whose sum is σ = 4268534088. Its totient is φ = 544724640.

The previous prime is 1661412331. The next prime is 1661412367. The reversal of 1661412348 is 8432141661.

1661412348 is a `hidden beast` number, since 1 + 6 + 614 + 1 + 2 + 34 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 376086 + ... + 380477.

Almost surely, 2^1661412348 is an apocalyptic number.

1661412348 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1661412348 is an abundant number, since it is smaller than the sum of its proper divisors (2607121740).

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

1661412348 is a wasteful number, since it uses less digits than its factorization.

1661412348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756634 (or 756629 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 1661412348 is about 40760.4262489979. The cubic root of 1661412348 is about 1184.3838531633.

The spelling of 1661412348 in words is "one billion, six hundred sixty-one million, four hundred twelve thousand, three hundred forty-eight".