1101489155 has 16 divisors (see below), whose sum is σ = 1425622464. Its totient is φ = 812173440.

The previous prime is 1101489131. The next prime is 1101489157. The reversal of 1101489155 is 5519841011.

It is not a de Polignac number, because 1101489155 - 2¹⁶ = 1101423619 is a prime.

It is a super-2 number, since 2×1101489155² = 2426556717165228050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101489157) 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, 31490 + ... + 56520.

It is an arithmetic number, because the mean of its divisors is an integer number (89101404).

Almost surely, 2^1101489155 is an apocalyptic number.

1101489155 is a deficient number, since it is larger than the sum of its proper divisors (324133309).

1101489155 is a wasteful number, since it uses less digits than its factorization.

1101489155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25726.

The product of its (nonzero) digits is 7200, while the sum is 35.

The square root of 1101489155 is about 33188.6901669831. The cubic root of 1101489155 is about 1032.7457311927.

The spelling of 1101489155 in words is "one billion, one hundred one million, four hundred eighty-nine thousand, one hundred fifty-five".