1016121654 has 48 divisors (see below), whose sum is σ = 2335486608. Its totient is φ = 318183936.

The previous prime is 1016121643. The next prime is 1016121679. The reversal of 1016121654 is 4561216101.

1016121654 is a `hidden beast` number, since 1 + 0 + 1 + 6 + 1 + 2 + 1 + 654 = 666.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176794 + ... + 182450.

It is an arithmetic number, because the mean of its divisors is an integer number (48655971).

Almost surely, 2^1016121654 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1016121654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1167743304).

1016121654 is an abundant number, since it is smaller than the sum of its proper divisors (1319364954).

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

1016121654 is a wasteful number, since it uses less digits than its factorization.

1016121654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6269 (or 6266 counting only the distinct ones).

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

The square root of 1016121654 is about 31876.6631566104. The cubic root of 1016121654 is about 1005.3452619336.

Adding to 1016121654 its reverse (4561216101), we get a palindrome (5577337755).

The spelling of 1016121654 in words is "one billion, sixteen million, one hundred twenty-one thousand, six hundred fifty-four".