1663047450 has 60 divisors (see below), whose sum is σ = 4620819390. Its totient is φ = 443478240.

The previous prime is 1663047431. The next prime is 1663047467. The reversal of 1663047450 is 547403661.

It is a happy number.

1663047450 is a `hidden beast` number, since 16 + 630 + 4 + 7 + 4 + 5 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1436334201 + 226713249 = 37899^2 + 15057^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 201265 + ... + 209364.

Almost surely, 2^1663047450 is an apocalyptic number.

1663047450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1663047450 is an abundant number, since it is smaller than the sum of its proper divisors (2957771940).

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

1663047450 is a wasteful number, since it uses less digits than its factorization.

1663047450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410653 (or 410639 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 1663047450 is about 40780.4787858112. The cubic root of 1663047450 is about 1184.7722683671.

The spelling of 1663047450 in words is "one billion, six hundred sixty-three million, forty-seven thousand, four hundred fifty".