1601771061 has 16 divisors (see below), whose sum is σ = 2351628288. Its totient is φ = 961695600.

The previous prime is 1601771029. The next prime is 1601771071.

1601771061 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1601771061 - 2⁵ = 1601771029 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601771021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 223285 + ... + 230346.

It is an arithmetic number, because the mean of its divisors is an integer number (146976768).

Almost surely, 2^1601771061 is an apocalyptic number.

1601771061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1601771061 is a deficient number, since it is larger than the sum of its proper divisors (749857227).

1601771061 is a wasteful number, since it uses less digits than its factorization.

1601771061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453752.

The product of its (nonzero) digits is 1764, while the sum is 30.

The square root of 1601771061 is about 40022.1321396050. The cubic root of 1601771061 is about 1170.0384873014.

It can be divided in two parts, 16017 and 71061, that added together give a palindrome (87078).

The spelling of 1601771061 in words is "one billion, six hundred one million, seven hundred seventy-one thousand, sixty-one".