1443542157 has 12 divisors (see below), whose sum is σ = 2194859680. Its totient is φ = 911710728.

The previous prime is 1443542153. The next prime is 1443542167. The reversal of 1443542157 is 7512453441.

1443542157 is a `hidden beast` number, since 1 + 4 + 435 + 4 + 215 + 7 = 666.

It is not a de Polignac number, because 1443542157 - 2² = 1443542153 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 (1443542153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4220713 + ... + 4221054.

Almost surely, 2^1443542157 is an apocalyptic number.

It is an amenable number.

1443542157 is a deficient number, since it is larger than the sum of its proper divisors (751317523).

1443542157 is a wasteful number, since it uses less digits than its factorization.

1443542157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8441792 (or 8441789 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 1443542157 is about 37993.9752724034. The cubic root of 1443542157 is about 1130.1683924265.

Adding to 1443542157 its reverse (7512453441), we get a palindrome (8955995598).

The spelling of 1443542157 in words is "one billion, four hundred forty-three million, five hundred forty-two thousand, one hundred fifty-seven".