1436155897 has 6 divisors (see below), whose sum is σ = 1578584714. Its totient is φ = 1305596160.

The previous prime is 1436155871. The next prime is 1436155901. The reversal of 1436155897 is 7985516341.

It can be written as a sum of positive squares in only one way, i.e., 1435197456 + 958441 = 37884^2 + 979^2 .

It is not a de Polignac number, because 1436155897 - 2¹⁹ = 1435631609 is a prime.

It is a super-3 number, since 3×1436155897³ (a number of 28 digits) contains 333 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 1436155897.

It is not an unprimeable number, because it can be changed into a prime (1436155997) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5934408 + ... + 5934649.

Almost surely, 2^1436155897 is an apocalyptic number.

It is an amenable number.

1436155897 is a deficient number, since it is larger than the sum of its proper divisors (142428817).

1436155897 is a wasteful number, since it uses less digits than its factorization.

1436155897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11869079 (or 11869068 counting only the distinct ones).

The product of its digits is 907200, while the sum is 49.

The square root of 1436155897 is about 37896.6475694091. The cubic root of 1436155897 is about 1128.2374948957.

The spelling of 1436155897 in words is "one billion, four hundred thirty-six million, one hundred fifty-five thousand, eight hundred ninety-seven".