1641061512 has 64 divisors (see below), whose sum is σ = 4715712000. Its totient is φ = 528155712.

The previous prime is 1641061501. The next prime is 1641061517. The reversal of 1641061512 is 2151601461.

1641061512 is a `hidden beast` number, since 1 + 6 + 41 + 0 + 615 + 1 + 2 = 666.

It is a super-2 number, since 2×1641061512² = 5386165772335452288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1641061517) 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, 124728 + ... + 137255.

It is an arithmetic number, because the mean of its divisors is an integer number (73683000).

Almost surely, 2^1641061512 is an apocalyptic number.

1641061512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1641061512 is an abundant number, since it is smaller than the sum of its proper divisors (3074650488).

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

1641061512 is a wasteful number, since it uses less digits than its factorization.

1641061512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262027 (or 262017 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1641061512 is about 40510.0174277919. The cubic root of 1641061512 is about 1179.5280866943.

Adding to 1641061512 its reverse (2151601461), we get a palindrome (3792662973).

The spelling of 1641061512 in words is "one billion, six hundred forty-one million, sixty-one thousand, five hundred twelve".