1969532157 has 8 divisors (see below), whose sum is σ = 2626317184. Its totient is φ = 1312884288.

The previous prime is 1969532143. The next prime is 1969532171. The reversal of 1969532157 is 7512359691.

It is an interprime number because it is at equal distance from previous prime (1969532143) and next prime (1969532171).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1969532157 - 2⁴ = 1969532141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1969532657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5973 + ... + 63045.

It is an arithmetic number, because the mean of its divisors is an integer number (328289648).

Almost surely, 2^1969532157 is an apocalyptic number.

It is an amenable number.

1969532157 is a deficient number, since it is larger than the sum of its proper divisors (656785027).

1969532157 is a wasteful number, since it uses less digits than its factorization.

1969532157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68579.

The product of its digits is 510300, while the sum is 48.

The square root of 1969532157 is about 44379.4114088955. The cubic root of 1969532157 is about 1253.4904378961.

The spelling of 1969532157 in words is "one billion, nine hundred sixty-nine million, five hundred thirty-two thousand, one hundred fifty-seven".