1189939557 has 16 divisors (see below), whose sum is σ = 1639688192. Its totient is φ = 766802160.

The previous prime is 1189939549. The next prime is 1189939567. The reversal of 1189939557 is 7559399811.

It is not a de Polignac number, because 1189939557 - 2³ = 1189939549 is a prime.

It is a super-2 number, since 2×1189939557² = 2831912298626712498, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1189939497 and 1189939506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189939547) 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, 77298 + ... + 91404.

It is an arithmetic number, because the mean of its divisors is an integer number (102480512).

Almost surely, 2^1189939557 is an apocalyptic number.

It is an amenable number.

1189939557 is a deficient number, since it is larger than the sum of its proper divisors (449748635).

1189939557 is a wasteful number, since it uses less digits than its factorization.

1189939557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15048.

The product of its digits is 3061800, while the sum is 57.

The square root of 1189939557 is about 34495.5005326782. The cubic root of 1189939557 is about 1059.6805602646.

The spelling of 1189939557 in words is "one billion, one hundred eighty-nine million, nine hundred thirty-nine thousand, five hundred fifty-seven".