1189958151 has 4 divisors (see below), whose sum is σ = 1586610872. Its totient is φ = 793305432.

The previous prime is 1189958149. The next prime is 1189958167. The reversal of 1189958151 is 1518599811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1518599811 = 3 ⋅506199937.

It is not a de Polignac number, because 1189958151 - 2¹ = 1189958149 is a prime.

It is a super-2 number, since 2×1189958151² = 2832000802262677602, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1189958151.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189958141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198326356 + ... + 198326361.

It is an arithmetic number, because the mean of its divisors is an integer number (396652718).

Almost surely, 2^1189958151 is an apocalyptic number.

1189958151 is a deficient number, since it is larger than the sum of its proper divisors (396652721).

1189958151 is an equidigital number, since it uses as much as digits as its factorization.

1189958151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396652720.

The product of its digits is 129600, while the sum is 48.

The square root of 1189958151 is about 34495.7700450360. The cubic root of 1189958151 is about 1059.6860797600.

The spelling of 1189958151 in words is "one billion, one hundred eighty-nine million, nine hundred fifty-eight thousand, one hundred fifty-one".