1534202681 has 6 divisors (see below), whose sum is σ = 1686355146. Its totient is φ = 1394729600.

The previous prime is 1534202653. The next prime is 1534202687. The reversal of 1534202681 is 1862024351.

It can be written as a sum of positive squares in only one way, i.e., 1530061456 + 4141225 = 39116^2 + 2035^2 .

It is not a de Polignac number, because 1534202681 - 2¹⁰ = 1534201657 is a prime.

It is a super-2 number, since 2×1534202681² = 4707555732775175522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1534202687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6339560 + ... + 6339801.

It is an arithmetic number, because the mean of its divisors is an integer number (281059191).

Almost surely, 2^1534202681 is an apocalyptic number.

1534202681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1534202681 is a deficient number, since it is larger than the sum of its proper divisors (152152465).

1534202681 is a wasteful number, since it uses less digits than its factorization.

1534202681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12679383 (or 12679372 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 1534202681 is about 39168.8994101187. The cubic root of 1534202681 is about 1153.3494489063.

The spelling of 1534202681 in words is "one billion, five hundred thirty-four million, two hundred two thousand, six hundred eighty-one".