1038941661 has 16 divisors (see below), whose sum is σ = 1398407168. Its totient is φ = 686070000.

The previous prime is 1038941653. The next prime is 1038941663. The reversal of 1038941661 is 1661498301.

It is not a de Polignac number, because 1038941661 - 2³ = 1038941653 is a prime.

It is a super-2 number, since 2×1038941661² = 2158799549922877842, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1038941663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284316 + ... + 287946.

It is an arithmetic number, because the mean of its divisors is an integer number (87400448).

Almost surely, 2^1038941661 is an apocalyptic number.

It is an amenable number.

1038941661 is a deficient number, since it is larger than the sum of its proper divisors (359465507).

1038941661 is a wasteful number, since it uses less digits than its factorization.

1038941661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 1038941661 is about 32232.6179668981. The cubic root of 1038941661 is about 1012.8156121405.

The spelling of 1038941661 in words is "one billion, thirty-eight million, nine hundred forty-one thousand, six hundred sixty-one".