2651401389 has 32 divisors (see below), whose sum is σ = 4468629760. Its totient is φ = 1360737792.

The previous prime is 2651401349. The next prime is 2651401411. The reversal of 2651401389 is 9831041562.

It is not a de Polignac number, because 2651401389 - 2⁷ = 2651401261 is a prime.

It is a super-3 number, since 3×2651401389³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651401309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 121144 + ... + 141345.

It is an arithmetic number, because the mean of its divisors is an integer number (139644680).

Almost surely, 2^2651401389 is an apocalyptic number.

It is an amenable number.

2651401389 is a deficient number, since it is larger than the sum of its proper divisors (1817228371).

2651401389 is a wasteful number, since it uses less digits than its factorization.

2651401389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262549.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 2651401389 is about 51491.7603991163. The cubic root of 2651401389 is about 1384.0713953293.

The spelling of 2651401389 in words is "two billion, six hundred fifty-one million, four hundred one thousand, three hundred eighty-nine".