1189473137 has 2 divisors, whose sum is σ = 1189473138. Its totient is φ = 1189473136.

The previous prime is 1189473127. The next prime is 1189473167. The reversal of 1189473137 is 7313749811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1009269361 + 180203776 = 31769^2 + 13424^2 .

It is a cyclic number.

It is not a de Polignac number, because 1189473137 - 2⁴ = 1189473121 is a prime.

It is a super-3 number, since 3×1189473137³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1189473107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 594736568 + 594736569.

It is an arithmetic number, because the mean of its divisors is an integer number (594736569).

Almost surely, 2^1189473137 is an apocalyptic number.

It is an amenable number.

1189473137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1189473137 is an equidigital number, since it uses as much as digits as its factorization.

1189473137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 44.

The square root of 1189473137 is about 34488.7392782050. The cubic root of 1189473137 is about 1059.5420880215.

The spelling of 1189473137 in words is "one billion, one hundred eighty-nine million, four hundred seventy-three thousand, one hundred thirty-seven".