1613661048 has 64 divisors (see below), whose sum is σ = 4677292800. Its totient is φ = 514499040.

The previous prime is 1613661041. The next prime is 1613661103. The reversal of 1613661048 is 8401663161.

1613661048 is a `hidden beast` number, since 1 + 6 + 1 + 36 + 610 + 4 + 8 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1613661041) 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, 157438 + ... + 167373.

It is an arithmetic number, because the mean of its divisors is an integer number (73082700).

Almost surely, 2^1613661048 is an apocalyptic number.

1613661048 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1613661048 is an abundant number, since it is smaller than the sum of its proper divisors (3063631752).

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

1613661048 is a wasteful number, since it uses less digits than its factorization.

1613661048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324849 (or 324839 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 1613661048 is about 40170.4001473722. The cubic root of 1613661048 is about 1172.9264283629.

The spelling of 1613661048 in words is "one billion, six hundred thirteen million, six hundred sixty-one thousand, forty-eight".