1020154655 has 16 divisors (see below), whose sum is σ = 1319483424. Its totient is φ = 752699520.

The previous prime is 1020154651. The next prime is 1020154657. The reversal of 1020154655 is 5564510201.

It is a happy number.

It is not a de Polignac number, because 1020154655 - 2² = 1020154651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020154651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77837 + ... + 89993.

It is an arithmetic number, because the mean of its divisors is an integer number (82467714).

Almost surely, 2^1020154655 is an apocalyptic number.

1020154655 is a deficient number, since it is larger than the sum of its proper divisors (299328769).

1020154655 is a wasteful number, since it uses less digits than its factorization.

1020154655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13466.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 1020154655 is about 31939.8599715152. The cubic root of 1020154655 is about 1006.6735825561.

Adding to 1020154655 its reverse (5564510201), we get a palindrome (6584664856).

The spelling of 1020154655 in words is "one billion, twenty million, one hundred fifty-four thousand, six hundred fifty-five".