1642970361 has 4 divisors (see below), whose sum is σ = 2190627152. Its totient is φ = 1095313572.

The previous prime is 1642970281. The next prime is 1642970411. The reversal of 1642970361 is 1630792461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1642970361 - 2⁷ = 1642970233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1642970561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273828391 + ... + 273828396.

It is an arithmetic number, because the mean of its divisors is an integer number (547656788).

Almost surely, 2^1642970361 is an apocalyptic number.

It is an amenable number.

1642970361 is a deficient number, since it is larger than the sum of its proper divisors (547656791).

1642970361 is an equidigital number, since it uses as much as digits as its factorization.

1642970361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547656790.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 1642970361 is about 40533.5707901488. The cubic root of 1642970361 is about 1179.9852437588.

The spelling of 1642970361 in words is "one billion, six hundred forty-two million, nine hundred seventy thousand, three hundred sixty-one".