1220098154 has 16 divisors (see below), whose sum is σ = 1997925696. Its totient is φ = 554200800.

The previous prime is 1220098153. The next prime is 1220098163. The reversal of 1220098154 is 4518900221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220098154.

It is not an unprimeable number, because it can be changed into a prime (1220098153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13859 + ... + 51305.

It is an arithmetic number, because the mean of its divisors is an integer number (124870356).

Almost surely, 2^1220098154 is an apocalyptic number.

1220098154 is a deficient number, since it is larger than the sum of its proper divisors (777827542).

1220098154 is a wasteful number, since it uses less digits than its factorization.

1220098154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38941.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 1220098154 is about 34929.9034353088. The cubic root of 1220098154 is about 1068.5583852458.

Adding to 1220098154 its reverse (4518900221), we get a palindrome (5738998375).

The spelling of 1220098154 in words is "one billion, two hundred twenty million, ninety-eight thousand, one hundred fifty-four".