2070401781 has 8 divisors (see below), whose sum is σ = 3154897984. Its totient is φ = 1183086720.

The previous prime is 2070401779. The next prime is 2070401807. The reversal of 2070401781 is 1871040702.

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

It is not a de Polignac number, because 2070401781 - 2¹ = 2070401779 is a prime.

It is a super-2 number, since 2×2070401781² = 8573127069535943922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2070401701) 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, 49295260 + ... + 49295301.

It is an arithmetic number, because the mean of its divisors is an integer number (394362248).

Almost surely, 2^2070401781 is an apocalyptic number.

2070401781 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2070401781 is a deficient number, since it is larger than the sum of its proper divisors (1084496203).

2070401781 is an equidigital number, since it uses as much as digits as its factorization.

2070401781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98590571.

The product of its (nonzero) digits is 3136, while the sum is 30.

The square root of 2070401781 is about 45501.6678925070. The cubic root of 2070401781 is about 1274.5343486806.

The spelling of 2070401781 in words is "two billion, seventy million, four hundred one thousand, seven hundred eighty-one".