161702949 has 8 divisors (see below), whose sum is σ = 224978112. Its totient is φ = 103114880.

The previous prime is 161702923. The next prime is 161702969. The reversal of 161702949 is 949207161.

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

It is a cyclic number.

It is not a de Polignac number, because 161702949 - 2²³ = 153314341 is a prime.

It is a super-2 number, since 2×161702949² = 52295687430593202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161702969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1171692 + ... + 1171829.

It is an arithmetic number, because the mean of its divisors is an integer number (28122264).

Almost surely, 2^161702949 is an apocalyptic number.

It is an amenable number.

161702949 is a deficient number, since it is larger than the sum of its proper divisors (63275163).

161702949 is a wasteful number, since it uses less digits than its factorization.

161702949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343547.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 161702949 is about 12716.2474417573. The cubic root of 161702949 is about 544.8027780062.

The spelling of 161702949 in words is "one hundred sixty-one million, seven hundred two thousand, nine hundred forty-nine".