1220167154 has 12 divisors (see below), whose sum is σ = 1836024414. Its totient is φ = 608161824.

The previous prime is 1220167153. The next prime is 1220167301. The reversal of 1220167154 is 4517610221.

It can be written as a sum of positive squares in only one way, i.e., 1184942929 + 35224225 = 34423^2 + 5935^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220167153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1027349 + ... + 1028535.

Almost surely, 2^1220167154 is an apocalyptic number.

1220167154 is a deficient number, since it is larger than the sum of its proper divisors (615857260).

1220167154 is an frugal number, since it uses more digits than its factorization.

1220167154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809 (or 1622 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1220167154 is about 34930.8911137406. The cubic root of 1220167154 is about 1068.5785281986.

Adding to 1220167154 its reverse (4517610221), we get a palindrome (5737777375).

The spelling of 1220167154 in words is "one billion, two hundred twenty million, one hundred sixty-seven thousand, one hundred fifty-four".