1020151566 has 24 divisors (see below), whose sum is σ = 2526089904. Its totient is φ = 291471840.

The previous prime is 1020151547. The next prime is 1020151597. The reversal of 1020151566 is 6651510201.

It is a happy number.

It is a super-2 number, since 2×1020151566² = 2081418435224504712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4048095 + ... + 4048346.

It is an arithmetic number, because the mean of its divisors is an integer number (105253746).

Almost surely, 2^1020151566 is an apocalyptic number.

1020151566 is an abundant number, since it is smaller than the sum of its proper divisors (1505938338).

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

1020151566 is a wasteful number, since it uses less digits than its factorization.

1020151566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8096456 (or 8096453 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1020151566 is about 31939.8116149736. The cubic root of 1020151566 is about 1006.6725664952.

Adding to 1020151566 its reverse (6651510201), we get a palindrome (7671661767).

The spelling of 1020151566 in words is "one billion, twenty million, one hundred fifty-one thousand, five hundred sixty-six".