1016155540 has 12 divisors (see below), whose sum is σ = 2133926676. Its totient is φ = 406462208.

The previous prime is 1016155523. The next prime is 1016155559. The reversal of 1016155540 is 455516101.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 258695056 + 757460484 = 16084^2 + 27522^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1016155499 and 1016155508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25403869 + ... + 25403908.

It is an arithmetic number, because the mean of its divisors is an integer number (177827223).

Almost surely, 2^1016155540 is an apocalyptic number.

1016155540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1016155540 is an abundant number, since it is smaller than the sum of its proper divisors (1117771136).

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

1016155540 is a wasteful number, since it uses less digits than its factorization.

1016155540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50807786 (or 50807784 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 1016155540 is about 31877.1946695439. The cubic root of 1016155540 is about 1005.3564373510.

The spelling of 1016155540 in words is "one billion, sixteen million, one hundred fifty-five thousand, five hundred forty".