1012161554 has 8 divisors (see below), whose sum is σ = 1518520368. Its totient is φ = 505988100.

The previous prime is 1012161551. The next prime is 1012161637. The reversal of 1012161554 is 4551612101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1012161554² = 2048942022791389832, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1012161551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31772 + ... + 55079.

It is an arithmetic number, because the mean of its divisors is an integer number (189815046).

Almost surely, 2^1012161554 is an apocalyptic number.

1012161554 is a deficient number, since it is larger than the sum of its proper divisors (506358814).

1012161554 is an equidigital number, since it uses as much as digits as its factorization.

1012161554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92680.

The product of its (nonzero) digits is 1200, while the sum is 26.

The square root of 1012161554 is about 31814.4865430829. The cubic root of 1012161554 is about 1004.0375277635.

Adding to 1012161554 its reverse (4551612101), we get a palindrome (5563773655).

The spelling of 1012161554 in words is "one billion, twelve million, one hundred sixty-one thousand, five hundred fifty-four".