1301395890 has 32 divisors (see below), whose sum is σ = 3259149696. Its totient is φ = 331950080.

The previous prime is 1301395889. The next prime is 1301395897. The reversal of 1301395890 is 985931031.

It is not an unprimeable number, because it can be changed into a prime (1301395897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 942351 + ... + 943730.

It is an arithmetic number, because the mean of its divisors is an integer number (101848428).

Almost surely, 2^1301395890 is an apocalyptic number.

1301395890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1301395890 is an abundant number, since it is smaller than the sum of its proper divisors (1957753806).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1301395890 is a wasteful number, since it uses less digits than its factorization.

1301395890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1886114.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 1301395890 is about 36074.8650725127. The cubic root of 1301395890 is about 1091.7833752297.

The spelling of 1301395890 in words is "one billion, three hundred one million, three hundred ninety-five thousand, eight hundred ninety".